shat·ter (shătʹər)v. shat·tered, shat·ter·ing, shat·tersv. tr. 1. To cause to break or burst suddenly into pieces, as with a violent blow. 2. a. To damage seriously; disable: His health was shattered by the disease. b. To cause the destruction or ruin of; destroy: The outcome of the conflict shattered our dreams of peace and prosperity.v. intr. To break into pieces; smash or burst. See Synonyms at break.n. 1. a. The act of shattering. b. The condition of being shattered. 2. A splintered or fragmented condition. Often used in the plural: a rare piece of porcelain now in shatters. [Middle English schateren, from Old English *sceaterian, to scatter.] shatʹter·ing·ly adv.