1. a book forming part of a work or series. synonyms: book, publication, tome, hardback, paperback, title; More a consecutive sequence of issues of a periodical. historical a scroll of parchment or papyrus containing written matter.
A metric unit of capacity, formerly defined as the volume of 1 kilogram of water under standard conditions, now equal to 1,000 cubic centimeters (about 1.75 pints).