keel
- vt. 给…装龙骨；把…翻转
- n. 龙骨；平底船；龙骨脊
- vi. 翻倒；倾覆
- n. (Keel)人名；(德)克尔；(英)基尔
英英释意
- 1. the median ridge on the breastbone of birds that fly
- 2. one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability