1)To violently smell, deeply inhale

2)To snort
Everyone thought Julie was weird when we saw her picking up joeys cat and sniffing it.

"Remember that guy we met on the train yesterday? He sniffed me, like, right after you got off. Weirdo."

"Oh yeah man, we sniffed so many lines last night!"
by Rosemary stogner October 28, 2013
Noun: a cult/religion. A pathway to enlightenment.
Verb: to snif

If you have nothing to contribute to a conversation online, just say snif. Please do not confuse snif with sniff.
“snif and the Jedi order have a lot in common
“snif”
by the snif council December 21, 2021
Simlar to TGIF, but pronounced "sniff". Refers to the phrase made popular by the movie "Friday", standing for "Shit Nigga I'ts Friday!"
Person 1: "What day is it today?"

Person 2: "Aw, snif!"
by vfproductions March 3, 2007
An acronym used to describe a male that someone may have sexual relations with but not a serious relationship. Some Nigga I Fuck!
Aww girl, that aint my man, he's just my SNIF.
by Sweetjasi November 28, 2010
When a women sneezes and quifs at the same time.
I think that girl just snifed.

"I think I just snifed"
by BabyFarts March 19, 2009
Sucking, with one's nose, but not like as in 'Timmy, you suck', more as in 'straws suck'. Cannot be done underwater unless you happen to be a water shrew or star-nosed mole.
Sniffing is challenging to do underwater. Lucky us, otherwise we'd be able to smell all the fish.
by Sniffatron 2000 June 26, 2018
When you're high on a drug from sniffing (ie. cocaine/ket/md)
Mate are u sniffed
by Swagkt June 12, 2014