The Collaborative International Dictionary
Mammillary
Mammillary \Mam"mil*la*ry\, a. [Cf. F. mammilaire. See Mammilla.]
Of or pertaining to the mammilla, or nipple, or to the breast; resembling a mammilla; mammilloid.
(Min.) Composed of convex convex concretions, somewhat resembling the breasts in form; studded with small mammiform protuberances.
Wiktionary
mammillary
a. 1 Resembling a breast or nipple in shape or form. 2 Pertaining to the nipples. n. 1 (context geology speleology English) A carbonate coating formed through the precipitation of calcium carbonate onto existing rock below the water surface in cave pools. 2 (context anatomy English) A mammillary body, one of a pair of small round bodies, located on the undersurface of the brain, that form part of the limbic system.