Found 2 items, similar to crossjack.
English → English (WordNet) Definition: crossjack crossjack n : the lowermost sail on a mizzenmast [syn: mizzen course]
English → English (gcide) Definition: Crossjack Crossjack \Cross"jack`\ (kr?s"j?k` or kr?"j?k`), n. (Naut.) The lowest square sail, or the lower yard of the mizzenmast. [1913 Webster]