Definitions from Wiktionary (bum)

▸ noun:  (informal or childish, chiefly Commonwealth) The buttocks.
▸ noun:  (informal or childish, chiefly Commonwealth) The anus.
▸ verb:  (UK, Ireland, transitive, colloquial) To sodomize; to engage in anal sex.
▸ noun:  (colloquial, sometimes derogatory) A homeless person, usually a man.
▸ noun:  (colloquial, sometimes derogatory) A lazy, incompetent, or annoying person, usually a man.
▸ noun:  (colloquial, sports) A player or racer who often performs poorly.
▸ noun:  (colloquial) A drinking spree.
▸ verb:  (transitive, colloquial) To ask someone to give one (something) for free; to beg for something.
▸ verb:  (intransitive, colloquial) To stay idle and unproductive, like a hobo or vagabond.
▸ verb:  (transitive, slang, British) To wet the end of a marijuana cigarette (spliff).
▸ adjective:  (slang) Of poor quality or highly undesirable.
▸ adjective:  (slang) Unfair.
▸ adjective:  (slang) Injured and without the possibility of full repair, defective.
▸ adjective:  (slang) Unpleasant or unhappy.
▸ verb:  To depress; to make unhappy.
▸ noun:  (dated) A humming noise.
▸ verb:  (intransitive) To make a murmuring or humming sound.
▸ noun:  (obsolete) A bumbailiff.
▸ Also see bum

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