Cat's eye - gemstone (chrysoberyl)
Cat's cradle - a string game, comes from corruption of cratchcradle, Old French for manger
Looking like the cat that swallowed the canary - looking guilty
Cat call - a loud, disapproving cry from a member of a crowd or audience
Like a cat on a hot tin roof - a very busy person
There's more than one way to skin a cat (a phrase I've always hated) - there's more than one method available
Fat cat - a wealthy, powerful person
Not enough room to swing a cat - a crowded situation

[This message has been edited by 4 feline house (edited February 02, 2001).]