noun

• (informal, uncountable, sometimes slightly vulgar) Mucus, especially mucus from the nose.
  "Once, I remember, the little fair-haired boy had a choking fit at dinner, and a stream of snot ran out of his nose on to his plate in a way horrible to see."
• (slang, countable) A contemptible child.
  "With no warning a gang of little snots — none larger or older than I was — threw me to the ground, pulled my knickers below my knees — without any explanation, and allowed me to get up."
• (slang, obsolete) A mean fellow.
• (Northern England, dialectal) The flamed out wick of a candle.

verb

• (ambitransitive, informal) To blow, wipe, or clear (the nose).
• (intransitive, informal) To sniff or snivel; to produce snot, to have a runny nose.
  "I was snotting all into my mouth and having to eat it, silently shuddering."