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English definition of “sniff”

sniff

noun [C]     /snɪf/
a quick breath in through the nose to smell something, or to stop liquid in the nose from coming out: Have a sniff of this medicine - it smells revolting , doesn't it? "I don't think much of that idea ," she said with a sniff (= an expression of a low opinion ).Smells and smellingColds and fluFevers and infectious diseases
(Definition of sniff noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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