1670s, "juggler who appears to swallow fire as part of an act," from fire (n.) + eater. From 1804 as "person of irascible or recklessly defiant disposition;" especially in U.S. history in reference to vehement Southern partizans (1851). Perhaps due to the extended senses, fire-swallower began to be used for the original sense by 1883. Related: Fire-eating.
1853, "worker who moves loads using a cart;" agent noun from truck (v.2). Meaning "person who drives a motorized truck" is by 1935, a shortening of truck driver (1907).
"a truck; a long wagon with a flat bed and four wheels," 1838, British railroad word, probably from verb lurry "to pull, tug" (1570s), which is of uncertain origin. Meaning "large motor vehicle for carrying goods on roads" (equivalent of U.S. truck (n.1)) is first attested 1911.
recreational pastime of riding a river on a truck tire inner tube, 1975; see tube (n.).