jibhead
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English
[edit]Etymology
[edit]Pronunciation
[edit]Noun
[edit]jibhead (plural jibheads)
- (mining) A jib's (arm of a crane) head.
- 1966, Boris Mikhaĭlovich Vorobév, Ramrao T. Deshmukh, Advanced Coal Mining[1], volume 1, Asia Publishing House, →LCCN, →OCLC, page 449:
- An improvement over the arcwaller, this machine is designed for giving a shear cut in any plane in addition to the horizontal cut, with a view to reduce the amount of blasting and to get better size-consist of the broken coal. It is used for rapid advance of headings. It has four units: a gearhead, a motor housing, a main jibhead, and an eccentric jibhead. The cutting head is mounted eccentrically on the main jibhead and the two are capable of complete rotational movement independently or […]
- (nautical) A piece of iron at the head of a jib (triangular staysail).
- (slang) A jib (crystal methamphetamine) user; a methhead.