- (n.) The two lowest petals of the corolla of a papilionaceous flower, united and inclosing the stamens and pistil; a carina. See Carina.
- (n.) Fig.: The whole ship.
- (n.) A brewer's cooling vat; a keelfat.
- (v.i.) To traverse with a keel; to navigate.
- (n.) A projecting ridge along the middle of a flat or curved surface.
- (n.) A barge or lighter, used on the Type for carrying coal from Newcastle; also, a barge load of coal, twenty-one tons, four cwt.
- (n.) A longitudinal timber or series of timbers scarfed together, extending from stem to stern along the bottom of a vessel. It is the principal timber of the vessel, and, by means of the ribs attached on each side, supports the vessel's frame. In an iron vessel, a combination of plates supplies the place of the keel of a wooden ship. See Illust. of Keelson.
- (v.i.) To turn up the keel; to show the bottom.
- (v.t.&i.) To cool; to skim or stir.
- (n.) In a dirigible, a construction similar in form and use to a ship's keel; in an aeroplane, a fin or fixed surface employed to increase stability and to hold the machine to its course.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). keel. Retrieved September 23, 2026, from http://smartdefine.org/keel/definitions/2025174 |
| Chicago | Webster's. 2011. "keel" http://smartdefine.org/keel/definitions/2025174 (accessed September 23, 2026). |
| Harvard | Webster's 2011, keel, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/keel/definitions/2025174>. |
| MLA | Webster's. "keel" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/keel/definitions/2025174> |