(n): a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel
(n): a mast fixed to the head of a topmast on a square-rigged vessel
(n): the mast next above a lower mast and topmost in a fore-and-aft rig
"At four bells in the afternoon watch, or two by the clocks in the town, Jack was sitting in front of a small looking-glass in his sleeping cabin with a freshly-laundered cravat the size of a topgallant studdingsail spread out ready to be folded about his neck..."
--Patrick O'Brian, The Far Side of the World, 57