butt1
  
  v.
  - hit with the head or horns.
- 
(butt in)
 interrupt or intrude on a conversation or activity. ▸
(butt out)
 N. Amer. informal stop interfering. 
n.
 a rough push with the head.
Etymology
  ME: from OFr. boter, of Gmc origin.
 
  
    
butt2
  
  n.
  - an object of criticism or ridicule.
- an archery or shooting target or range. ▸a mound on or in front of which a target is set up for archery or shooting. ▸a grouse-shooter's stand. 
Etymology
  ME: from OFr. but, of unknown origin.
 
  
    
butt3
  
  n.
    - 
(also butt end)
 the thicker end of something, especially a tool or a weapon. ▸the square end of a plank or plate meeting the end or side of another. 
- 
(also butt end)
 the stub of a cigar or a cigarette.
- N. Amer. informal a person's bottom.
- the trunk of a tree, especially the part just above the ground.
v.
 meet end to end:
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 the shop butted up against the row of houses.
 ▸join (pieces of stone, timber, etc.) with the ends or sides flat against each other.
Phrase
  
    
      - butt naked
 informal completely naked.
 
  Etymology
  ME: the noun appar. rel. to Du. bot ‘stumpy’, also to buttock; the verb partly from butt2, reinforced by abut.
 
  
    
butt4
  
  n.
  - a cask used for wine, ale, or water.
- US a liquid measure equal to 126 US gallons (equivalent to 477.5 litres).
Etymology
  ME: from OFr. bot, from late L. buttis.