turtleback
Tur"tle*back`, n. 1. (Archæol.) A rude stone celt of a form suggesting the back of a turtle. 2. (Naut.) A convex deck at the bow or stern of a vessel, so made to shed the seas quickly.
Tur"tle*back`, n. 1. (Archæol.) A rude stone celt of a form suggesting the back of a turtle. 2. (Naut.) A convex deck at the bow or stern of a vessel, so made to shed the seas quickly.