Gleam (?), v. i. [Cf. OE. glem birdlime, glue, phlegm, and E. englaimed.] (Falconry) To disgorge filth, as a hawk. Gleam, n. [OE. glem, gleam, AS. glÊm, prob. akin to E. glimmer, and perh. to Gr. &?; warm, &?; to warm. Cf. Glitter.]