bellows
/ˈbeləʊz/plural noun
also treated as sing.
1
- a device with an air bag that emits a stream of air when squeezed褶式风箱, 手压吹风器。
1.1
- （亦作a pair of bellows）a kind with two handles used for blowing air at a fire推拉式风箱。
1.2
- a kind used in a harmonium or small organ（簧风琴或小风琴的）皮腔, 风箱。
2
- an object or device with concertinaed sides to allow it to expand and contract, such as a tube joining a lens to a camera body（照相机等的）伸缩皮腔; 伸缩式波纹管。
词源
Middle English: probably from Old English belga, plural of belig （see BELLY）， used as a shortened form of earlier blǣstbelig 'blowing-bag'.