keel

/ki:l/

柯林斯星级

BNC频率: 18688

现代语料频率: 18738

n. 龙骨, 平底船

vt. 装以龙骨, 使倾覆

vi. 倾覆

n. a projection or ridge that suggests a keel

n. the median ridge on the breastbone of birds that fly

n. one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability

过去式:keeled

现在分词:keeling

复数形式:keels

第三人称单数:keels

过去分词:keeled

Having two keel-like projections, as the upper palea of grasses.

a keel-shaped constellation in the southern hemisphere

any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom

birds having keeled breastbones for attachment of flight muscles

Shaped like the keel or prow of a ship

今日更新

更新时间：2025-07-08 07:25:54