名詞 waist:

1. the narrowing of the body between the ribs and hips
   同義詞：waistline
2. the narrow part of the shoe connecting the heel and the wide part of the sole
   同義詞：shank

1. Her hair nearly reached down to her waist.
   她的頭發(fā)幾乎垂到了腰部。
2. If the skirt is too big, we can take in the waist.
   要是裙子太大了，我們可以把腰部收緊一些。
3. She wears a ribbon belt round her waist.
   她在腰部束了一條緞帶。

waist

n.（名詞）

The part of the human trunk between the bottom of the rib cage and the pelvis.
腰：身體軀干胸腔底部和骨盆間的部分
The narrow part of the abdomen of an insect.
昆蟲腹部的較窄部位

The part of a garment that encircles the waist of the body.
腰身部位：衣服上環(huán)繞人體腰部的部位
The upper part of a garment, extending from the shoulders to the waistline, especially the bodice of a woman`s dress.
內(nèi)衣上身：衣服的上部，從肩部一直至腰線，尤指婦女的緊身胸衣
A blouse.
罩衫
A child`s undershirt.
兒童的內(nèi)衣
The middle section or part of an object, especially when narrower than the rest.
物體的腰部：物體的中間部位或部分，尤指比其余部分窄的部分
Nautical The middle part of the deck of a ship between the forecastle and the quarterdeck.
【航?！?/i> 船腰：船甲板中部前甲板和后甲板之間的部分

來源：
Middle English wast
中古英語 wast
perhaps from Old English *wôst [growth, size] * see aug-
可能源自 古英語 *wôst [增大，大小] *參見 aug-

【引伸】
waist.less
adj.（形容詞）