Webster’s Revised Unabridged Dictionary · 1913
Umbilicate
Um·bil′i·cate, Um·bil′i·ca′ted, a. [L. umbilicatus. See Umbilic.] (a) Depressed in the middle, like a navel, as a flower, fruit, or leaf; navel-shaped; having an umbilicus; as, an umbilicated smallpox vesicle. (b) (Bot.) Supported by a stalk at the central point.