No, i don't believe there is any such word. This is because every English word must have a vowel(except "y"). "Ab Eb Ib Ob Ub Yb" are all not words.....
baobab.
Blurb
thumb
Benumb is a 6 letter word. It means to make numb.
Ballerina is one 9-letter word beginning with B and ending with A.
The word bat starts with the latter b and it ends with the latter a and t
bathtub, brewpub
blurb
Scrub Squab
Arab
The five letter word for a brief advertisement is blurb.
bulwark