1. adjective slang Excellent; extremely entertaining; of very high quality. (Sometimes used as "the bomb.") That steak I had at dinner was bomb!I'm not usually a fan of action films, but that one was the bomb!
2. verb To fail spectacularly or to a great degree. Despite all the media hype, the major summer blockbuster bombed on its opening weekend.
bomb
1. n. a bad performance or an inherently bad show. They tried as hard as they could, but the thing was a bomb from Act One on.
2. in. to fail. My first try bombed, but things got better.