n. In Greek antiquity and archaeology, a type of cylindrical vase or box with a cover, used especially by women, as for the toilet. See cut in preceding column.n. A box; a jewel-case.n. In anatomy, the cotyloid cavity, or acetabulum of the hip-joint.n. [capitalized] A genus of brachiopodsn. [capitalized] In conchology, a genus of gastropods.n. [capitalized] A genus of land-tortoises of the family Testudinidæ, having the anterior part of the plastron so movable that it can be shut like the lid of a pyxis.n. A tortoise of this genus, the only known species, Pyxis arachnoidea, of Madagascar and Mauritius. Its shell is yellow, with broad black bands radiating from the center of the dorsal shields.n. [capitalized] In entomology, a genus of coleopterous insects.n. In botany: A seed-vessel, commonly a capsule, with a circumscissile dehiscence, the top falling away like a lid, as in the common purslane and plantain, and in the fruit known as monkey-pots. See Lecythis, and cut under circumscissile.n. The theca of mosses. Also pyxidium.n. In old arms and armor, an engine-of-war: probably the same as culverin, the early form of cannon.