n. An abbreviation of tome (volume).n. A familiar form of the common Christian name Thomas.n. Used, like jack, attributively or in composition with the name of an animal, a male: as, a tom-cat; hence, as a noun, a male; specifically, a male cat.n. The knave of trumps at gleek.n. A close-stool.n. A machine formerly used in gold-washing, first in the southern Atlantic States, and later in California, where, however, it was soon superseded by the sluice.n. Same as def. 5, above.n. A kind of large pitcher or water-can in use in England in the early part of the nineteenth century.n. A Middle English form of toom.