[jib] n [origin unknown] (1661): a triangular sail set on a stay extending usu. from the head of the foremast to the bowsprit or the jibboom; also: the small triangular headsail on a sloop--see sail illustration
[2]jib n [prob. by shortening & alter. fr. gibbet] (1764) 1: the projecting arm of a crane
2: a derrick boom [3]jib vi jibbed ; jib.bing [prob. fr. jib to shift from one side of a ship to the other, perh. fr. [1]jib] (1811): to refuse to proceed further: balk -- jib.ber n