Found 2 items, similar to topsail.
English → English (WordNet) Definition: topsail topsail n : a sail (or either of a pair of sails) immediately above the lowermost sail of a mast and supported by a topmast
English → English (gcide) Definition: Topsail Topsail \Top"sail`\, n. (Naut.) In a square-rigged vessel, the sail next above the lowermost sail on a mast. This sail is the one most frequently reefed or furled in working the ship. In a fore-and-aft rigged vessel, the sail set upon and above the gaff. See Cutter, Schooner, Sail, and Ship. [1913 Webster] Topsail schooner. (Naut.) See Schooner, and Illustration in Appendix. [1913 Webster]