bum, v. i. [imp. & p. p. bummed p. pr. & vb. n. bumming (░).]  To make murmuring or humming sound.
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  bum
       adj : of very poor quality [syn: cheap, cheesy, chintzy, crummy,
              punk, sleazy, tinny]
       n 1: a person who is deemed to be despicable or contemptible;
            "only a rotter would do that"; "kill the rat"; "throw
            the bum out"; "you cowardly little pukes!"; "the British
            call a contemptible person a `git'" [syn: rotter, dirty
            dog, rat, skunk, stinker, stinkpot, puke, crumb,
             lowlife, scum bag, so-and-so, git]
       2: a disreputable vagrant; "a homeless tramp"; "he tried to
          help the really down-and-out bums" [syn: tramp, hobo]
       3: person who does no work; "a lazy bum" [syn: idler, loafer,
           do-nothing, layabout]
       4: the fleshy part of the human body that you sit on; "he
          deserves a good kick in the butt"; "are you going to sit
          on your fanny and do nothing?" [syn: buttocks, nates,
          arse, butt, backside, buns, can, fundament, hindquarters,
           hind end, keister, posterior, prat, rear, rear
          end, rump, stern, seat, tail, tail end, tooshie,
           tush, bottom, behind, derriere, fanny, ass]
       v 1: ask for and get free; be a parasite [syn: mooch, cadge,
            grub, sponge]
       2: be lazy or idle; "Her son is just bumming around all day"
          [syn: bum around, bum about, arse around, arse
          about, fuck off, loaf, frig around, waste one's
          time, lounge around, loll, loll around, lounge
          about]
       [also: bumming, bummed]