snot

1. (informal, uncountable, sometimes slightly vulgar) Mucus, especially mucus from the nose.Examples: "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."informaluncountable

2. (slang, countable) A contemptible child.Examples: "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."countableslang

3. (slang, obsolete) A mean fellow.countableobsoleteslanguncountable

4. (Northern England, dialectal) The flamed out wick of a candle.Synonyms: snuffNorthern-Englandcountabledialectaluncountable

5. (US ?, figurative, informal) A blemish or encumbrance that one exercises out of something.Examples: "Working the snot out of shoulders at full flexion and extension end ranges with isometrics can not only be the hidden key to creating more available range of motion for immobile, injury-prone shoulders, but also to help develop dormant muscle groups like the rear delts, which otherwise get little to no play in exercises intended for them."countablefigurativelyinformaluncountable