preceding all others of a series or kind; the ordinal of one; earliest; as, the first day of a month; the first year of a reign.-foremost; in front of, or in advance of, all others.-most eminent or exalted; most excellent; chief; highest; as, demosthenes was the first orator of greece.-before any other person or thing in time, space, rank, etc.; -- much used in composition with adjectives and participles.-the upper part of a duet, trio, etc., either vocal or instrumental; -- so called because it generally expresses the air, and has a preeminence in the combined effect.