• (n.) A frame or fender of rope or junk, laid out at the sides or bows of a vessel to secure it from injury by floating ice.
Bow'grace` noun (Nautical) A frame or fender of rope or junk, laid out at the sides or bows of a vessel to secure it from injury by floating ice. 
In music, the bowgrace is the hand that draws the bow, that is the right hand.
a fender or pad used to protect the bows of a vessel from ice.