noun

• (slang) A temper; a bad mood.
  "Near-synonyms: fit, hissy, hissy fit, shit fit, tantrum, snippiness"
• (slang, derogatory) Term of abuse.
  "I want some hot coffee now or so help me I'll throw you out on your arse, you little snit."

noun

• (US, dialect) A beer chaser commonly served in three-ounce servings in highball or juice glasses with a Bloody Mary cocktail in the upper midwest states of United States including Minnesota, North Dakota, Wisconsin, Iowa, Michigan, and Illinois.
  "The bartender served us each a snit with our Bloody Marys this morning."

noun

• (especially dialectal, e.g. West Virginia, Lunenburg, chiefly in the plural) A slice of dried fruit.
  "Scenes of plenty, bliss Arcad'n' Sparkling eyes and rosy features; Joyous, blessed, happy creatures! Apple snits and pumpkin slices; Eggs and butter bring good prices! Gran'ries full and runnin' Over; Bulging haymows sweet with clover; ..."