You know, this is a good question.
I've looked just now and can't find them in any ASL dictionary... (except the basic Sun, Moon, Earth)
And I've noticed something...
It seems you have to PAY for anything more than a very basic handshape dictionary of maybe a thousand words or two.
This is ridiculous, and needs to be rectified.
There are all kinds of FREE dictionaries for many other languages (and Thesaurus, too). Why should a ASL dictionary (a GOOD one) be any different?!