A cupule is a small structure shaped like a cup, including:
In archeology, rock cupules are circular man-made hollows on the surface of a large rock or a rock slab On a smaller artifact they are called a cupstone. In botany: the base of an acorn, see calybium and cupule. In entomology, a sucker on the feet of some flies.
See also Cupula (disambiguation) Copula (disambiguation) Cupul