Jib n.
1. Naut. A triangular sail set upon a stay or halyard extending from the foremast or fore-topmast to the bowsprit or the jib boom. Large vessels often carry several jibs; as, inner jib; outer jib; flying jib; etc.
2. Mach. The projecting arm of a crane, from which the load is suspended.
3. One that jibs, or balks; a jibber.
4. A stationary condition; a standstill.
Jib boom Naut., a spar or boom which serves as an extension of the bowsprit. It is sometimes extended by another spar called the flying jib boom. [Written also gib boom.]
Jib crane Mach., a crane having a horizontal jib on which a trolley moves, bearing the load.
Jib door Arch., a door made flush with the wall, without dressings or moldings; a disguised door.
Jib header Naut., a gaff-topsail, shaped like a jib; a jib-headed topsail.
Jib topsail Naut., a small jib set above and outside of all the other jibs.
The cut of one's jib, one's outward appearance. [Colloq.]