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English definition of “fastener”

fastener

noun [C]     /ˈfɑːs.ən.ər/ US  /ˈfæs.ən.ɚ/
a button, zip, or other device for temporarily joining together the parts of things such as clothesFastening and tyingFastening clothing and textiles
(Definition of fastener noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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