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English definition of “sniff”

sniff

verb     /snɪf/
C2 [I or T] to smell something by taking air in through your nose: He sniffed his socks to see if they needed washing. Dogs love sniffing each other. She sniffed at her glass of wine before tasting it. Dogs are sometimes used at airports to sniff out (= find by smelling) drugs in people's luggage. He was expelled from school for sniffing glue (= taking in the gas from glue because of the feelings of pleasure that this gives).Smells and smelling C2 [I] to take air in quickly through your nose, usually to stop the liquid inside the nose from flowing out: You were sniffing a lot - I presumed you had a cold.Colds and fluFevers and infectious diseases [T] to speak in an unpleasant way, showing that you have a low opinion of something: [+ speech] "They didn't even serve wine at dinner!" she sniffed.Showing arrogance and conceitConfidence and self-assuranceBoasting
(Definition of sniff verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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