butt

1 butt /ˈbʌt/ noun
plural butts
1 butt
/ˈbʌt/
noun
plural butts
Britannica Dictionary definition of BUTT
[count]
1 
chiefly US, informal + sometimes impolite : the part of the body you sit on : buttocks
— used in informal phrases where ass might also be used
2 
: the thicker end of a weapon or tool
3 
a  : the end part of a cigarette or cigar that is not smoked
b  informal : a cigarette

kick butt

— see 1kick
2 butt /ˈbʌt/ noun
plural butts
2 butt
/ˈbʌt/
noun
plural butts
Britannica Dictionary definition of BUTT
[count]
: a person who is treated badly or is made fun of — usually singular — + of
3 butt /ˈbʌt/ verb
butts; butted; butting
3 butt
/ˈbʌt/
verb
butts; butted; butting
Britannica Dictionary definition of BUTT
: to hit or push (something) forcefully with the head
[+ object]
[no object]

butt heads

chiefly US, informal
: to disagree about how something should be done

butt in

[phrasal verb] informal
: to get involved in something (such as a conversation or someone else's activities) especially in a rude way

butt out

[phrasal verb] chiefly US, informal
: to stop being involved in something (such as a conversation or someone else's affairs)
4 butt /ˈbʌt/ noun
plural butts
4 butt
/ˈbʌt/
noun
plural butts
Britannica Dictionary definition of BUTT
[count]
: a forceful hit or push with the head
5 butt /ˈbʌt/ verb
butts; butted; butting
5 butt
/ˈbʌt/
verb
butts; butted; butting
Britannica Dictionary definition of BUTT
US
: to place something right next to something else or to be right next to something else
[+ object]
[no object]
6 butt /ˈbʌt/ noun
plural butts
6 butt
/ˈbʌt/
noun
plural butts
Britannica Dictionary definition of BUTT
[count] British