1. a piece of equipment for blowing air into or through something. Bellows are used for making a fire burn better or for producing sound in some types of musical instruments.
   • ● a pair of bellows (= a small bellows with two handles to be pushed together)
   Word OriginMiddle English: probably from Old English belga, plural of belig ‘bag’, of Germanic origin, from a base meaning ‘swell, be inflated’, used as a shortened form of earlier blà¦Ì„stbelig ‘blowing bag’.

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[TahlilGaran] English Dictionary ▲