noun
- A four-sided sail set beneath a horizontal yard suspended at the middle from a mast. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). square sail. Retrieved September 21, 2026, from http://smartdefine.org/square_sail/definitions/1208359 |
| Chicago | WordNet. 2010. "square sail" http://smartdefine.org/square_sail/definitions/1208359 (accessed September 21, 2026). |
| Harvard | WordNet 2010, square sail, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/square_sail/definitions/1208359>. |
| MLA | WordNet. "square sail" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/square_sail/definitions/1208359> |