—adj. 1. impressive in size, appearance, or general effect: grand mountain scenery. 2. stately, majestic, or dignified: In front of an audience her manner is grand and regal. 3. highly ambitious or idealistic: grand ideas for bettering the political situation. 4. magnificent or splendid: a grand palace. 5. noble or revered: a grand old man. 6. highest, or very high, in rank or official dignity: a grand potentate. 7. main or principal; chief: the grand ballroom. 8. of great importance, distinction, or pretension: a man used to entertaining grand personages. 9. complete or comprehensive: a grand total. 10. pretending to grandeur, as a result of minor success, good fortune, etc.; conceited: Jane is awfully grand since she got promoted. 11. first-rate; very good; splendid: to have a grand time; to feel grand. 12. Music.written on a large scale or for a large ensemble: a grand fugue.
—n. 1. See grand piano. 2. Informal.an amount equal to a thousand dollars: The cops found most of the loot, but they're still missing about five grand.
a combining form used in genealogical terminology meaning “one generation more remote”: grandfather; grandnephew.