Answer: btwo

AnswerCrossword Clue
BTWO

U.S. stealth bomber (usually written with a numeral, but how about a little creative license?)

BTWO

Riboflavin designation

BTWO

USAF stealth plane

BTWO
Call in a bingo hall
BTWO
Kind of bomber
BTWORiboflavin, familiarly
BTWOVitamin a.k.a. riboflavin
BTWOStealth bomber
BTWOVitamin also known as riboflavin