/ Dictionary / Index H heir at law: Meaning and Definition of Find definitions for: heir' at law' Pronunciation: [key] — pl. heirs at law. a person who inherits, or has a right of inheritance in, the real property of one who has died without leaving a valid will. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heir apparent heirdom Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language