Definitions from Wiktionary (sniffle)

▸ verb:  (intransitive) To make a whimpering or sniffing sound when breathing, because of a runny nose.
▸ verb:  (transitive) To utter with a whimpering or sniffing sound.
▸ noun:  The act, or the sound of sniffling; the condition of having a runny or wet nose, as from a cold or allergies.

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