noun

• (countable) The larger or thicker end of something; the blunt end, in distinction from the sharp or narrow end
  "Get up off your butt and get to work."
• (countable) The larger or thicker end of something; the blunt end, in distinction from the sharp or narrow end
  "I can see your butt."
• (countable) The larger or thicker end of something; the blunt end, in distinction from the sharp or narrow end
  "Get your butt to the car."
• (countable) The larger or thicker end of something; the blunt end, in distinction from the sharp or narrow end

verb

• (transitive) To strike bluntly, particularly with the head.
  "Two harmless lambs are butting one the other."
• (intransitive) To strike bluntly with the head.
  "Rams butt at other males during mating season."
• (transitive, intransitive, eastern Canada, parts of the northeastern US) To cut in line (in front of someone).
  "Teacher! He just butted me!"

noun

• (English units) An English measure of capacity for liquids, containing 126 wine gallons which is one-half tun.
  "Again, by 28 Hen. VIII, cap. 14, it is re-enacted that the tun of wine should contain 252 gallons, a butt of Malmsey 126 gallons, a pipe 126 gallons, a tercian or puncheon 84 gallons, a hogshead 63 gallons, a tierce 41 gallons, a barrel 31.5 gallons, a rundlet 18.5 gallons. –"

noun

• (Northern England) Any of various flatfish such as sole, plaice or turbot