Hāze1, n.
n. [Armor. aēz, aēzen, ēzen, warm vapor, exhalation, zephyr. Cf. also A-S. hasu, livid, russet, dusky.] Vapor which renders the air thick, with little or no dampness; a slight lack of transparency in the air; hence, obscurity; dimness.
O’er the sky The silvery haze of summer drawn. Tennyson.