Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: the outer boundary of an artifact or a material layer constituting or resembling such a boundary
"there is a special cleaner for these surfaces"; "the cloth had a pattern of red dots on a white surface";
How to sign: appear or become visible; make a showing
"She turned up at the funeral"; "I hope the list key is going to surface again";
How to sign: a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight