/ Dictionary / Index L lining: Meaning and Definition of Find definitions for: lin•ing Pronunciation: (lī'ning), [key] — n. something that is used to line another thing; a layer of material on the inner side or surface of something. the material used to strengthen the back of a book after the sheets have been folded, backed, and sewed. the act or process of lining something. lin•ing Pronunciation: (lī'ning), [key] — n. the act of marking or ornamenting a surface with lines. a design or ornamentation composed of lines. a system of designing type so that all characters of the same point size, regardless of font, will align with one another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lining (Thesaurus) liniment link Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language