bum

Short definition from Wiktionary

Noun

1. 1
   The buttocks.
2. 2
   The anus.
3. 3
   An act of anal sex.
4. 4
   A homeless person, usually a man.
5. 5
   A lazy, incompetent, or annoying person, usually a man.
6. 6
   A player or racer who often performs poorly.
7. 7
   A drinking spree.
8. 8
   A humming noise.
9. 9
   A bumbailiff.

Verb

1. 1
   To sodomize; to engage in anal sex.
2. 2
   To ask someone to give one (something) for free; to beg for something.
3. 3
   To stay idle and unproductive, like a hobo or vagabond.
4. 4
   To wet the end of a marijuana cigarette (spliff).
5. 5
   To depress; to make unhappy.
6. 6
   To make a murmuring or humming sound.

Interjection

1. 1
   An expression of annoyance.

Adjective

1. 1
   Of poor quality or highly undesirable.
2. 2
   Unfair.
3. 3
   Injured and without the possibility of full repair, defective.
4. 4
   Unpleasant or unhappy.