AMC: American Motors Company, which bought Kaiser-Jeep in 1970 and produced Jeeps.
Camp Jeep: Weekend get-together for Jeep owners, their families, and their Jeeps.
Cherokee: Nameplate primarily applied to two-door Wagoneers starting in 1974, and then applied to downsized Cherokees from 1984 on.
Chrysler Corp.: The company that purchased AMC primarily for its Jeep product line in 1986.
CJ: Civilian Jeep.
CJ-2A: Produced from 1945 to 1949, this was the first civilian Jeep.
CJ-3A: Produced from 1948 to 1953, this was the second-generation civilian Jeep.
CJ-3B: Produced from 1952 to 1968, this was known as a high hood flatfender due to the high hood, which made room for the Hurricane engine.
CJ-4: You'll probably never see or hear about this 1951 cross between a CJ-3A and a CJ-5, so don't worry about it.
CJ-5: Produced from 1954 to 1983, this is the standard round-fender Jeep most people know.
CJ-6: Produced from 1955 to 1981, this was basically a stretched CJ-5.
CJ-7: Produced from 1976 to 1986, this was a stretched CJ-5 with wider door openings.
CJ-8: Produced from 1981 to 1986, this was basically a CJ-7 with a long rear-body overhang. It's called a Scrambler.
CJ-10: Produced in the late '80s primarily for military export and domestic commercial industries, it looks much like a cross between a J-series truck and a CJ-8.
Commanche: Produced from 1984 to 1986, this is a two- or four-wheel-drive small pickup built on the XJ Cherokee platform.
Commando: Produced in 1972 and 1973, this last attempt at a car-type Jeep was an outgrowth of the original Jeepster.
Crackerbox: Slang for Willys wagons produced from 1949 through 1965, since they look like old crackerboxes. The name also applies to the pickups as crackerbox trucks.
Dauntless: Engine name and designation for the Buick V-6 and V-8 engines used in Jeeps from 1966 through 1971.
DJ: Dispatcher Jeep, or two-wheel-drive version of a CJ in any of the numerical designations.
Elvis: '97 Jeep TJ modified by the staff at 4-Wheel & Off-Road. You wouldn't believe us if we told you how it got its name.
FC: Forward Control, as in FC-150 and FC-170. Produced from 1957 to 1965, these cab-over pickups look like the famous Tonka toys.
F-Head: Engine design with the intake valves in the head and the exhaust valves in the block. This is the Hurricane engine that was produced from 1952 to 1971.
Flatfender: The original Jeep from WWII and later civilian production. Named for the flat front fenders; also known as a flattie.
Flathead: Engine design with both exhaust and intake valves located in the block; also known as an L-head.
Gladiator: Name of the pickup produced from 1962 to 1971. Although the name was dropped, production of the trucks continued through 1987. These were also known as J-series trucks and SJ-series trucks.
Go-Devil: Jeep four-cylinder flathead engine, which was the standard engine from 1940 to 1952.
GPW: Designation of the Ford-produced WWII Jeep. The G stands for Government, the P for 80-inch wheelbase, and the W for the Willys design.
Grand Cherokee: Produced from 1993 to present, this luxo sport-ute draws upon years of Jeep experience and heritage to be the winner of more awards than any other vehicle.
High Hood: See CJ-3B.
Hurricane: F-head engine that replaced the Go-Devil and produced 72 horses rather than the earlier mill's 63.
Jeep: Registered trademark of the Chrysler Corporation. Originally a slang term for an unproven person or vehicle in the military and also the name of a cartoon character in the '30s.
J.E.E.P.: Just Empty Every Pocket.
Jeepin': The act of four-wheeling in a Jeep.
Jeep Jamboree: Organized four-wheeling event for Jeep owners produced by Mark A. Smith Enterprises.
Jeepster: Produced from 1947 to 1950, this was a two-wheel-drive convertible sports-car-type vehicle.
Jeepster Commando: Produced from 1967 through 1971, this 4x4 was a jaunty and sporty entry to the SUV market.
Jp: Newly acquired sister publication of 4-Wheel & Off-Road. Dedicated to Jeep vehicles.
J-series: Fullsize Gladiators, Wagoneers, and Cherokees.
Kaiser: Kaiser Steel bought Willys Overland in 1953 and created Kaiser Jeep.
M38: Produced from 1950 to 1953, this was a military version of the CJ-3A.
M38A1: Produced from 1952 to 1971, this was the forerunner of the CJ-5 but was the military variant.
M-715: Produced from 1967 to 1969, this was a military Gladiator pickup.
MB: Produced from 1941 to 1945, this was the first standardized military Jeep on which all other Jeeps are based. MB stands for military Model B.
Peugeot: Type of transmission installed in various Jeeps. Made in France and has a poor reputation.
Quadratrac: Type of transfer case used from 1973 to 1979. Later transfer cases have used the same name but are entirely different.
Rancho Overdrive: Modified Borg-Warner Overdrive fitted to the rear of Model 18 transfer cases in the late '50s.
Renault: Renault Motors came to AMC's financial rescue, and AMC built and marketed the French cars in exchange.
Renegade: Trim package initially offered on CJs in the early '70s consisting of bright paint jobs and snazzy stripes.
Round Headlights: What real Jeeps have.
Scrambler: See CJ-8.
Screaming Chicken: Slang for the Golden Eagle packages on Jeeps where an enormous decal of an eagle was plastered on the hood.
Sedan Delivery: A crackerbox wagon without rear-side windows and with doors on the rear instead of a conventional tailgate.
SJ: Senior Jeeps, to delineate the fullsize from the downsized Jeeps.
TJ: Code name for '97-to-present Wranglers; also thought to stand for Trendy Jeep.
Toledo: Where Jeeps have always been made.
Tornado: Name of 230ci six-cylinder, overhead-cam engine used in the early J-series vehicles.
Tuxedo Park MK IV: Fancy edition of the CJ-5 introduced in 1964. Consisted of lots of nickel-plated doo-dads and cool hood ornamentation.
Vigilante: Name of the 327ci V-8 Rambler/Nash engine used in some J-series vehicles; not related to the Chevy engine.
VJ: Code name for the original Willys Jeepster.
Wagoneer: Produced from 1962 to 1991. The original fullsize SUV.
Warn Overdrive: Overdrive manufactured by Warn and now available from Advance Adapters to fit the Dana 18 transfer case found in many Jeeps.
Wide Track: Cherokees that received wider axles than standard and were fitted with flares front and rear.
Willys: Parent company of Willys-Overland and the most commonly used name.
Willys-Overland: Produced Jeeps from 1940 to 1953, when taken over by Kaiser.
WJ: Code name for '99 Grand Cherokee.
Wrangler: Produced from 1987 to 1998 on two different platforms.
XJ: Code name for downsize Wagoneers and Cherokees introduced in 1984.
YJ: Code name for Wrangler from 1987 through 1995. Also thought to signify Yuppie Jeep.
ZJ: Code name for '93-'98 Grand Cherokee.