Definitions of butt:

• noun:   thick end of the handle
• noun:   the small unused part of something (especially the end of a cigarette that is left after smoking)
• noun:   a large cask (especially one holding a volume equivalent to 2 hogsheads or 126 gallons)
• noun:   a victim of ridicule or pranks
• noun:   a joint made by fastening ends together without overlapping
• noun:   sports equipment consisting of an object set up for a marksman or archer to aim at
• noun:   finely ground tobacco wrapped in paper; for smoking
• noun:   the fleshy part of the human body that you sit on

  Example: "He deserves a good kick in the butt"

• verb:   to strike, thrust or shove against, often with head or horns

  Example: "He butted his sister out of the way"

• verb:   place end to end without overlapping

  Example: "The frames must be butted at the joints"

• verb:   lie adjacent to another or share a boundary
• name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #5069)