
1) Brigantine feature 2) Canvas 3) Canvass 4) Certain nautical canvas 5) Feature of some schooners 6) Mast flapper 7) Sail 8) Sheet 9) Ship rig feature 10) Square-rigger feature
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https://www.crosswordclues.com/clue/topsail

A topsail is a sail set above another sail; on square-rigged vessels further sails may be set above topsails. == Square rig == On a square rigged vessel, a topsail is a square sail rigged above the course sail and below the topgallant sail where carried. A full rigged ship has either single or double (`split` upper and lower) topsails on all mas.....
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http://en.wikipedia.org/wiki/Topsail
[electoral district] Topsail is a provincial electoral district for the House of Assembly of Newfoundland and Labrador, Canada. As of 2011, there are 11,080 eligible voters living in the district. Topsail lies on eastern shore of Conception Bay and includes parts of the city of Mount Pearl and the towns of Conception Bay South and Paradise....
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http://en.wikipedia.org/wiki/Topsail_(electoral_district)

ship's sail above the lowermost sail
Found on
http://phrontistery.info/nautical.html

ship's sail above the lowermost sail
Found on
http://phrontistery.info/t.html

Square sail above the course. Some ships had double topsails, two smaller sails in place of a single one. Howe developed this system in the 1850's to permit easier handling of the sails.
Found on
http://shipwrightjournal.blogspot.co.uk/p/glossary-of-nautical-terms.html

• (n.) 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.
Found on
http://thinkexist.com/dictionary/meaning/topsail/

Top'sail` noun (Nautical) 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
Found on
http://www.encyclo.co.uk/webster/T/71

In a square rigged ship the topsail is the sail next above the lowermost one on the mast. Later sailing ships had an upper and a lower topsail.
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http://www.probertencyclopaedia.com/browse/RT.HTM

[
n] - a sail (or either of a pair of sails) immediately above the lowermost sail of a mast and supported by a topmast
Found on
http://www.webdictionary.co.uk/definition.php?query=topsail
noun a sail (or either of a pair of sails) immediately above the lowermost sail of a mast and supported by a topmast
Found on
https://www.encyclo.co.uk/local/20974

A square sail set above the lowest sail on the mast of a square-rigged ship or a triangular or square sail set above the gaff of a lower sail on a fore-and-aft-rigged ship.
Found on
https://www.encyclo.co.uk/local/23412
No exact match found.