Jib
.A triangular sail borne in front of the foremast. It has the bowsprit for a base in small vessels, and the jib-boom in larger ones, and exerts an important effect, when the wind is abeam, in throwing the ship’s head to leeward.
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Jib. The under-lip. A sailor’s expression; the under-lip indicating the temper, as the jib indicates the character of a ship.
The cut of his jib. A sailor’s phrase, meaning the expression of a person’s face. Sailors recognise vessels at sea by the cut of the jibs.