also fire-wall, 1851 as a physical wall meant to prevent the spread of fire in a structure, from fire (n.) + wall (n.). Computer sense (originally figurative) is by 1990.

also brush-fire, "a blaze in brush or scrub," 1848, from brush (n.2) + fire (n.).

also sure-fire, by 1864, American English, from sure + fire (v.). Originally of rifles.

word-forming element meaning "of fire; of fire and; of igneous origin," from Latin igneus (see igneous).

also pick-up, "that which is picked up," 1848; see pick up (v.). As "act of picking up" from 1882. Meaning "capacity for acceleration" is from 1909; that of "recovery" is from 1916. In reference to a game between informal teams chosen on the spot, from 1905; as an adjective, "composed of such things as are immediately available," by 1859.

Meaning "small truck used for light loads," 1937, is shortened from pickup truck (pickup body is attested from 1928). The notion probably being of a vehicle for use to "pick up" (feed, lumber, etc.) and deliver it where it was wanted.

also fire-works, "pyrotechnic contrivances," 1570s, from fire (n.) + works. Figurative use from 1660s.

also fire-proof, 1630s, from fire (n.) + proof. As a verb, from 1867. Related: Fireproofed; fireproofing.

1660s (trans.), "kindle or set on fire, cause to burn," from Latin ignitus, past participle of ignire "set on fire, make red hot," from ignis "fire" (see igneous). Attested earlier as an adjective (1550s). Intransitive sense of "catch fire, begin to burn" is from 1818. Related: Ignited; igniting.

"on fire," c. 1200, afure, from a- (1) "on" + fire (n.). Figurative use by late 14c.

late 14c., bonfir, banefire, "a fire in which bones are burned;" see bone (n.) + fire (n.). The original specific sense became obsolete and was forgotten by 18c. The general sense of "large open-air fire from any material for public amusement or celebration" is by mid-16c. and that of "large fire for any purpose" from 17c.