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bum    音标拼音: [b'ʌm]
n. 游荡者,懒鬼,闹饮
a. 没有价值的
vi. 过游民生活,免费得到,流浪
vt. 乞讨

游荡者,懒鬼,闹饮没有价值的过游民生活,免费得到,流浪乞讨

bum
adj 1: of very poor quality; flimsy [synonym: {bum}, {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'" [synonym: {rotter}, {dirty dog},
{rat}, {skunk}, {stinker}, {stinkpot}, {bum}, {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" [synonym: {tramp}, {hobo}, {bum}]
3: person who does no work; "a lazy bum" [synonym: {idler},
{loafer}, {do-nothing}, {layabout}, {bum}]
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?" [synonym: {buttocks}, {nates},
{arse}, {butt}, {backside}, {bum}, {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 [synonym: {mooch}, {bum},
{cadge}, {grub}, {sponge}]
2: be lazy or idle; "Her son is just bumming around all day"
[synonym: {bum}, {bum around}, {bum about}, {arse around}, {arse
about}, {fuck off}, {loaf}, {frig around}, {waste one's
time}, {lounge around}, {loll}, {loll around}, {lounge
about}]

Bum \Bum\ (b[u^]m), n. [Contr. fr. bottom in this sense.]
The buttock. [Low] --Shak.
[1913 Webster]


bum \bum\, v. i. [imp. & p. p. {bummed}; p. pr. & vb. n.
{bumming} (?).] [See {Boom}, v. i., to roar.]
To make murmuring or humming sound. --Jamieson.
[1913 Webster]

{to bum around} to wander about idly or aimlessly.
[PJC]


bum \bum\ (b[u^]m), v. t.
To borrow without intention of returning; to cadge; as, to
bum a cigarette; to bum a cup of coffee; -- usually with
inexpensive items as the object. [informal]
[PJC]


Bum \Bum\, n.
A humming noise. --Halliwell.
[1913 Webster]

223 Moby Thesaurus words for "bum":
Arab, Bowery bum, amiss, arse, ass, backside, bad, barfy,
bat around, beach bum, beachcomber, beg, beggar, beggarly fellow,
bender, birr, blighter, bo, bombilate, bombinate, boom, booze,
boozehound, bottle sucker, bottom, brannigan, budmash, bumble,
bummer, burr, bust, butt, buzz, cadge, cadger, caitiff, can,
carouse, cheeks, cheesy, count ties, crappy, creepy, crummy,
derelict, derriere, devil, dirty, dissatisfactory, divagate,
do-nothing, dogie, dolittle, drift, drifter, drone, drunk,
drunkard, elbow bender, faineant, fanny, flit, floater, gad,
gad about, gallivant, gamin, gamine, ginhound, go about,
go the rounds, godawful, goldbrick, good-for-naught,
good-for-nothing, goof off, goshawful, grim, guttersnipe, hairy,
hind end, hit, hit the road, hit the trail, hit up, hobo,
homeless waif, hooch hound, hum, human wreck, icky, idler, jag,
jaunt, keister, knock about, knock around, landloper, laze, lazy,
lazybones, lazzarone, loaf, loafer, loiter, loll, losel, lounge,
lowlife, lush, lusher, mauvais sujet, mean wretch, meander,
mendicant, mendicant friar, mendicant order, mooch, moocher,
mucker, mudlark, no-good, nomadize, panhandle, panhandler,
pass the hat, pauvre diable, peregrinate, pererrate, piker,
pilgarlic, poor, poor creature, poor devil, posterior, prat, prowl,
punk, purr, putrid, ragamuffin, ragman, ragpicker, ramble, range,
roam, rotten, rounder, rove, rum hound, rummy, rump, run about,
rusty-dusty, sad case, sad sack, saunter, schnorrer, scrounge,
scrounger, shitty, ski bum, skid-row bum, slouch, slug, slugabed,
soak, souse, sponge, stern, stew, stiff, stinking, stinky,
straggle, stray, street Arab, street arab, street urchin, stroll,
strum, sundowner, surf bum, swagman, swagsman, swillbelly,
swillbowl, swillpot, tail, tatterdemalion, tennis bum, thrum,
touch, traipse, tramp, truant, tuchis, turnpiker, tush, tushy,
unsatisfactory, up, urchin, vag, vagabond, vagabondize, vagrant,
vaurien, vomity, waif, waifs and strays, walk the tracks, wander,
wassail, wastrel, wayfare, whir, whiz, wino, worthless fellow,
wretch, wrong, yecchy

1. To make highly efficient, either in time or space, often at
the expense of clarity. "I managed to bum three more
instructions out of that code." "I spent half the night
bumming the interrupt code." In {elder days}, {John McCarthy}
(inventor of {Lisp}) used to compare some efficiency-obsessed
hackers among his students to "ski bums"; thus, optimisation
became "program bumming", and eventually just "bumming".

2. To squeeze out excess; to remove something in order to
improve whatever it was removed from (without changing
function; this distinguishes the process from a
{featurectomy}).

3. A small change to an algorithm, program, or hardware
device to make it more efficient. "This hardware bum makes
the jump instruction faster."

Usage: now uncommon, largely superseded by v. {tune} (and
{tweak}, {hack}), though none of these exactly capture sense
2. All these uses are rare in Commonwealth hackish, because
in the parent dialects of English "bum" is a rude synonym for
"buttocks".

[{Jargon File}]


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