You've heard this word a thousand times if you are a fan of Reggae music. Today I saw it spelled for the first time.
There are times when you hear the variation 'clot' for short. Mostly, however I've heard it pronouced 'BOOM-ba-claht' or 'BOOum-ba-claht' It's an insult of some sort and it sounds very cool when sampled at the right moment. But that's just about all I know.
UPDATE: A little curiosity kills a lot of dance hall music. I knew there was some connection between this word and 'blood clot' which I was going to put into the entry, but 'bomber' threw me off. Now I feel like a little kid who just first understands the meaning of the curse word he's been saying. Yike. It's a tampon.