Could be bi-annuals, as opposed to annuals.
Botany.
Another name for is is
Bed and Breakfast accommodation.
Bára
B-boys and b-girls
B-boys and b-girls
Barter
intestine
birds that start with b... Blue Footed Booby, Budgie(Parakeet in another name), Barn Swallow, Brown Headed Cow Bird, Blue Penguin. And that's only what i can think of right now, but there are many more!
Autumn. You lied about the b.
Bikini
brew