What is the meaning of sniffle?

noun

• The act of breathing heavily through the nose (as when the nose is congested.
  • synonyms: snuffle, snivel

verb

• Cry or whine with snuffling.
  • usage: "Stop snivelling-you got yourself into this mess"
  • synonyms: snivel, blubber, blub, snuffle
• Inhale audibly through the nose.
  • usage: "the sick student was sniffling in the back row"
  • synonyms: sniff