의미:
active mass 
áctive máss【화학】 활동량 《화학 반응에 관여한 물질의 농도》
ass 관용구
a hassle
a problem, a bother The tax form is a hassle this year. It's difficult to understand.
a horse's ass
a fool, a jerk After three drinks he was acting like a horse's ass.
a pain in the ass
a bother, a lot of trouble Fixing that car every day is a pain in the ass.
a piece of ass
sex, intercourse, nookie If it's just a piece of ass you want, why don't you find a prostitute?
a suicide pass (hockey)
a pass behind the player causing him to look back Older players always stop when receiving a suicide pass.
as slow as molasses in January
only a dead snail is slower The building approached its completion as slow as molasses in January.
ass
fool, dipstick, jerk Don't be an ass, Duddy. Stay in school and get your diploma.buttocks, backside, butt Those jeans fit you, but they're a little tight around the ass.
ass into gear
moving, working, doing After holidays, I'll get my ass into gear and paint the house.
ass over teakettle
falling over backwards, head over heels The cowboy knocked him off his feet - ass over teakettle!
better than a kick in the ass
better than punishment, not as bad as it could be, don't knock it "When I told him we had won $10 in the Lotto, he said, ""It's better than a kick in the ass."""
burn your ass
bother you, irritate you, bug you You know what burns my ass? Doing my income tax.
candy-ass
a person without courage or confidence Larry, that candy-ass! He's afraid to play me because he may lose.
cat's ass
(See the cat's ass)
character assassination
saying things that ruin a person's reputation, muckrake """What did they say about him?"" ""It was mainly gossip and character assassination."""
cover your ass
protect yourself by having documnets signed etc. If you discipline or dismiss an employee, cover your ass.
crawl on my hands and knees over broken glass just
do anything to be closer to her, worship the ground she walks on I'm so in love I'd crawl on my hands and knees over miles of broken glass to see her photo.
ditch class
skip class/play hookey.
don't know your ass from a hole in the ground
you are ignorant, you are mistaken, mixed up He said one member of the cult was so confused he didn't know his ass from a hole in the ground.
down to brass tacks
(See get down to brass tacks)
feather a pass (hockey)
pass a puck accurately but softly Nilsson could feather a pass better than the other players.
first class
high quality, excellent Pam's meals are first class. She's an excellent cook.
get down to brass tacks
begin the most important work or business Let's get down to brass tacks and begin talking about the new contract.
glassy eyed
dazed, not alert When I saw him he was glassy eyed. I think he was drunk.
grass is always greener on the other side
a place that is far away or different seems better than where we are now He realized that the grass is always greener on the other side when he saw that his new job wasn
grass is greener...
(See the grass is greener on the other side of the fence)
half assed
incomplete, half missing There's a guy at the door with a half-assed invention for sale.
hassle
(See a hassle)
hassle me
bother me, bug me, give me a bad time If you hassle me about my kinky hair, I'll cut it all off.
haul ass
do it, hurry, get going If you want a magazine, haul ass. You can buy one at the drugstore.
horse's ass
(See a horse's ass)
horse shoes up his ass
very lucky, always winning He's got horseshoes up his ass! He won six games of bingo!
in a pig's ass
not true, unbelievable, bull, full of it You wrote War and Peace? In a pig's ass!
jive ass
one who tries to look cool, show-off, show-off What a jive ass! Give him a mic, and he thinks he's Elvis.
just passing through
(See pass through)
kick ass
scold, lecture, give you hell The coach will kick ass if we don't go to practice.
kiss ass
be nice to get favors, brown nose I won't kiss ass to get a job. I refuse to be a slave.
knee high to a grasshopper
small or short, the size of a child When we lived in Oslo, you were just knee high to a grasshopper.
lard butt/lard ass
a person with fat buttocks, a person with a big bum When I was young and chubby, my brother called me lard butt.
let grass grow under one
be idle, be lazy, waste time He is always working hard and is not the type of person to let grass grow under his feet.
let the grass grow under one
be idle, be lazy, waste time That man is never content to let the grass grow under his feet. He is always busy.
look at (see) the world through rose-colored glass
see only the good things about something, be too optimistic He always looks at the world through rose-colored glasses and is never able to understand that some people are dishonest.
look at the world through rose-colored glasses
see only the good things about something, be too optimistic I told him not to be so naive and always look at the world through rose-colored glasses.
look up a dead horse's ass
do a worthless task, do a pointless exercise, pissing into the wind If they want a tax-free society, they may as well be looking up a dead horse's ass!
make a pass
show that you feel romantic toward someone Julie made a pass at me. She sent me a love note and smiled at me.
make a pass at someone
make romantic advances to a member of the opposite sex He was fired because he made a pass at one of the women who he works with.
my ass
I doubt it, that is not true """It's our right to own a gun."" ""My ass! It's a privilege!"""
on your ass
wrong, misinformed, all wet He doesn't know how to manage a business. He's on his ass!
pain in the ass
(See a pain in the ass)
pain in the neck (ass)
an annoying thing or person, bothersome Dealing with my neighbor is always a pain in the neck.
pass
old fashioned, dated, old hat It's pass