||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 on the line
||be accountable for an error or failure, take the rap
||I sent the package Overnight Air Mail, because my ass is on the line if it arrives late.
|ass over teakettle
||falling over backwards, head over heels
||The cowboy knocked him off his feet - ass over teakettle!
|at a glance
||with one look, a quick look
||I could see at a glance that the car was unsafe. A wheel was loose.
|at a good clip
||fast, at a high speed
||When you passed us you were going at a pretty good clip.
|at a loss for words
||unable to think of a reply or something to say
||When he asked why I wanted the vase, I was at a loss for words.
|at a moment's notice
||with little warning, on short notice
||We may call you at a moment's notice - whenever we need help.
||in any way, in the least
||"Are you sleepy?" "No. Not at all."
||at a distance, away from you
||The smoke keeps the mosquitoes at bay. They don't like smoke.