To utter a sharp, shrill cry; cry out more or less convulsively, at a pitch above that of a scream, as in great and sudden fright, in horror, or in extreme pain: used sometimes, by hyperbole, of laughter.To utter with a shriek or a shrill wild cry.n. A sharp, shrill outcry: as, the shriek of a whistle; shrieks of laughter. See shriek, v.n. Synonyms Screech etc. See screem.