(transitive, intransitive) To make a short, audible inhalation, through the nose, as when smelling something.

(countable) An instance of sniffing. / (countable) A quantity of something that is inhaled through the nose / (countable, colloquial) A brief perception, or tiny amount. / (uncountable, slang) Cocaine.

A short inhalation sound, sometimes associated with crying.

Third-person singular simple present indicative form of sniff

plural of sniff

(idiomatic) An informal check of an idea or proposal, using one's common sense or sense of propriety.

A fluoroscopic medical test during which the examinee is asked to "sniff" (quickly breathe in through the nose); diaphragm fluoroscopy.

Describing any of various products that are impregnated with a substance that releases an odour when scratched

(transitive) To find (something) by using the sense of smell. / (transitive, figuratively, by extension) To detect (something hidden or invisible).

plural of sniff test