1) Cup-shaped 2) Hollow 
• (a.) Characterized by cup shakes; -- said of timber. • (a.) Hollow; cuplike; also, full of cups, or small depressions.
A deep and enclosed lie.
A "cuppy" track. A dry and loose racing surface that breaks away under a horse's hooves.
Cup'py adjective 1. Hollow; cuplike; also, full of cups, or small depressions. 2. Characterized by cup shakes; -- said of timber. 
cup-shaped; hollow. · having indentations or depressions.