/ Dictionary / Index P prickly heat: Meaning and Definition of Find definitions for: prick'ly heat' Pronunciation: [key] — Pathol. Pathol. a cutaneous eruption accompanied by a prickling and itching sensation, due to an inflammation of the sweat glands. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prickly ash prickly pear Related Content Daily Word Quiz: knead Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language