n.
a filter that removes dust from the air that passes through it

keep one’s nose clean Idiom, Proverb

a clean bill of health

a good report from the doctor, a good checkup You'll never get a clean bill of health if you eat fat meat!

a new broom sweeps clean

an employee works hard on the first day or two, make a good impression "After my first day working for Grandfather, he said, ""A new broom sweeps clean."""

as clean as a whistle

without any dirt or marks, smooth and clean The hen squeezed, and out popped an egg as clean as a whistle.

clean bill of health

(See a clean bill of health)

clean cut

well groomed, clean, neat We're looking for clean-cut boys to work as waiters.

clean me out

buy all I have, steal everything I own The thieves cleaned us out. They took everything in our house.

clean up

make a lot of money, make a big profit I cleaned up at the horse races last year and still have some of the money left.

clean up on

defeat, beat, whip you, wipe you Little Chad cleaned up on big Clint. Chad is quite a fighter.

clean up your act

do it better, do it legally, get your act together I've missed classes, failed tests. I need to clean up my act.

clean up your plate

finish eating all the food on your plate, eat it up You may leave the table after you've cleaned up your plate.

keep (one's) adenoids clean

To behave properly; to break out of trouble. You bigger accumulate your adenoids clean, kid, or you're activity to run into agitation you can't handle.Learn more: clean, keep, nose

keep one’s adenoids clean

tv. to accumulate out of trouble, abnormally agitation with the law. I can accumulate my adenoids clean. Don’t worry. Learn more: clean, keep, nose

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Dictionary

More Idioms/Phrases

claptrap claws are showing clean bill of health clean cut clean me out clean up clean up on clean up your act clean up your plate clear as a bell clear as mud clear out clear sailing clear the air clear up clear your head/mind click in keep on at (one) keep on its feet keep on keeping on keep on tenterhooks keep on the good side of (someone) keep on the left side keep on the left(-hand) side keep on the right side keep on the right side of keep on the right side of (someone) keep on the right(-hand) side keep on the straight and narrow keep on top keep on top of (someone or something) keep on track keep on trucking keep on with keep on with (something) keep one eye on (someone or something) keep one in place keep one jump ahead keep one step ahead (of someone or something) keep one step ahead of keep one’s cool keep one’s head right keep one’s nose clean keep one's chin up keep one's cool keep one's distance keep one's eye on the ball keep one's eyes open keep one's fingers crossed, to keep one's hand in keep one's head keep one's head above water, to keep one's mouth shut keep one's nose clean keep one's own counsel keep one's powder dry keep one's shirt on keep one's word keep oneself to oneself keep oneself to oneself, to keep open house keep opinions to keep out keep out (of something) keep out from under (one's) feet keep out from under feet keep out of it/this Keep out of my way