1. vulgar slang, verb To have sexual intercourse (with someone). Used especially in the passive construction "get laid." As a teenager, I worried and thought about getting laid nearly constantly. It was at that point in the date that she decided she wanted to lay him.

2. vulgar slang, noun An act or instance of sexual intercourse. It's been way too long since my last lay. I refuse to go on a date with anyone who's just looking for a lay.

3. vulgar slang, noun A person with whom one has or might have sex. I heard he was a good lay.