Words related to Gib

masc. proper name, from Old French Guillebert (from Old High German Williberht, literally "a bright will") or Old French Gilebert, from Gisilbert, literally "a bright pledge," from Old High German gisil "pledge," a Celtic loan-word (compare Old Irish giall "pledge") + beorht "bright" (from PIE root *bhereg- "to shine; bright, white."). It was the common name for a male cat (especially in short form Gib) from c. 1400 (see Tom). As a unit of magneto-motive force, it honors English physicist William Gilbert (1544-1603). For the Gilbert Islands, see Kiribati.
jib (n.)
"large, triangular foresail of a ship," 1660s, gibb, of uncertain origin. Perhaps related to gibbet on the notion of a sail "hanging" from a masthead [Barnhart, OED]; and compare gib "projecting arm of a crane." Or perhaps from the nautical verb jib, jibe "shift a sail or boom to the other side" (1690s), from Dutch gijben, gijpen "turn suddenly" (of sails), which is apparently related to gijk "boom or spar of a sailing ship."

An observant sailor watching a strange vessel approach at sea judges her character by the condition of the jibs; hence cut of (one's) jib "personal appearance" (1821). Related: Jib-boom (1748). The jib in jib-door "door flush with a wall" (1792) is of uncertain origin and probably is not the same word.
gibbet (n.)
early 13c., "gallows," from Old French gibet "gallows; a bent stick, small stick with a cross" (13c.), diminutive of gibe "club; hoe," perhaps from Frankish *gibb "forked stick." "Originally synonymous with GALLOWS sb., but in later use signifying an upright post with projecting arm from which the bodies of criminals were hung in chains or irons after execution" [OED].
tomcat (n.)

also tom-cat, 1809, from Tom + cat (n.); probably influenced by Tom the Cat in the popular children's book "The Life and Adventures of a Cat" (1760). It replaced earlier Gib-cat (see Gib), from the familiar shortening of Gilbert, though Tom was applied to male kittens c. 1300. The name also has been used of the males of other beasts and birds since at least 1791 (such as tom-turkey, by 1846). Also see Tibert. The verb meaning "to pursue women promiscuously for sexual gratification" is recorded from 1927. Related: Tom-catting.