B-flat

adj: musicians' slang meaning ordinary or common, so-so; unimpressive.

"That restaurant was pretty B-flat; I've had better."

by Slideman October 31, 2006

b flat

when you don't have a full blown boner

i was looking up her skirt and i got a b flat

by xtimmiex June 3, 2007

B Flat

A fart that has a lot of bass, as opposed to being a squeeker

Jim: Holy shit Mark, that was one stinky fart.

Mark: Yeah, it was a B Flat.

by CMBC April 8, 2011

B Flat Clarinet

A b flat clarinet is the main kind of clarinet. It is in the key of B flat, that is why it is called a B flat clarinet. It has 22-28 keys and the embouchure or way you blow into the instrument, is very difficult to learn. Clarinet is very fun, and there is a Bass Clarinet, which is a regular clarinet, but it plays on a different key, not B flat.

I am in band and i am learning the B flat clarinet.

by band girl December 15, 2014

B flat

The person who takes it up the ass in gay sex

Used by music lovers

Hey you a b flat

by Bottomle March 3, 2021

B-flat Armored Clarinet

A name for the straight-belled soprano saxophone owing to its similarity to a metal clarinet.

Sam's ok on the alto-sax but he can tear up the b-flat armored clarinet.

by Sir-Hops-A-Lot February 14, 2021