1. [adj]  used especially of the head or upper back; "a bent head and sloping shoulders"
2. [adj]  showing an excessively deferential manner
3. [adj]  (music) of a stringed instrument; sounded by stroking with a bow
4. [adj]  have legs that curve outward at the knees
5. [adj]  (architecture) forming or resembling an arch; "an arched ceiling"

BOWED is a 5 letter word that starts with B.