a Of large size or extent; great; extensive; hence, relatively great; greatest; chief; principal.
a Great in size, and fine or imposing in appearance or impression; illustrious, dignified, or noble (said of persons); majestic, splendid, magnificent, or sublime (said of things).
a Having higher rank or more dignity, size, or importance than other persons or things of the same name.
a Standing in the second or some more remote degree of parentage or descent; -- generally used in composition; as, grandfather, grandson, grandchild, etc.
n (US|colloquial) One thousand dollars (cf. G |G).