Air, subst., a piece of music, played or sung, and chiefly one adapted to words: “a wonderful sweet a., with admirable rich words to it,” Cymb. II, 3, 19. “this music . . . with its sweet a.,” Tp. I, 2, 393. V, 58. Ado II, 3, 60. LLL III, 4. Mids. I, 1, 183 “(your tongue's sweet a.) any a. of music,” Merch. V, 76. Plural: Tp. I, 2, 422. III, 2, 145. Tw. II, 4, 5.