0 present participle of sniffle --
1 to breathe in quickly and repeatedly through the nose, usually because you are crying or because you have a cold: --
You're sniffling a lot today - have you got a cold?
Sniffling is not necessarily related to illness.
The man begins sniffling while cutting onions, and goes to the bathroom to wash his eyes, silently standing while letting the faucet run.
Conversely, sniffling is considered acceptable, as an alternative to nose-blowing.
Sniffling and runny nose need not come associated with sneezing or coughing.
It is clear that a large number of the products which are used for glue sniffling are shoplifted.
