Bostitch
Blair Witch
One word that rhymes with "cup" and starts with "B" is "blup."
break
A word that rhymes with blue and starts with B is "blew," which is the past tense of the verb "blow."
bule
Butt, buzzcut
resilient
bundamentalls
ball
brook
There are no words that start with B and rhyme with abrasive.
The word 'boom' can be used as a word for explosion that starts with a b.
Bead, bleed, breed.