The phrase "arm rest" is correct and usable in written English.
You can use it to refer to an arm support found on a chair or a couch, such as "The arm rest on this chair is very comfortable."
And take your elbow off my arm rest!
Lexus instead uses a mouselike pointer on the center arm rest under the driver's hand.
One bullet struck the door's arm rest, and one was never found.
I lifted one leg and put it on the arm rest, to put pressure on it.
The pipe-smoking architect even concealed a pipe rack in the arm rest of a sofa.
The captain said one slug, which has not been found, passed through the arm rest and probably caused serious injury to Mr. Jackson.
Forty-eight hours later, I'm sitting in my new chair facing a bewildering array of adjustments: seat height, seat tilt, back rest angle, arm rest position.
Mr. Scharfman said the seat was too low to the ground, one arm rest was broken, and the handles to push and steer the chair were falling apart.
I swung down and planted my navy blue pump half on a passenger's arm rest and half on his pinstriped leg.
This, in theory at least, means that two passengers can share an arm rest without coming into contact with one another.
He takes two bottles of Fiji water from a compartment inside the arm rest, twists off the caps and hands one to me.
