ball
brook
One word that rhymes with "cup" and starts with "B" is "blup."
Birch.
Badge, bell and bullet are small and shiny. They begin with the letter b.
bule
Butt, buzzcut
resilient
bundamentalls
Bear starts with the letter B
break
A word that rhymes with blue and starts with B is "blew," which is the past tense of the verb "blow."
There are no words that start with B and rhyme with abrasive.