noun

• (countable) An appearance of light, especially one which is indistinct or small, or short-lived.
  "Is not yon gleame, the ſhuddering morne that flakes, / VVith ſiluer tinctur, the eaſt vierge of heauen?"
• (countable, figuratively)
  "The rescue workers preserved a gleam of optimism that the trapped miners might still survive."
• (countable, figuratively)
• (countable, figuratively)
  "[H]is black visage lighted up with a curious, mischievous gleam."

verb

• (transitive) Chiefly in conjunction with an adverb: to cause (light) to shine.
  "Many a dry drop ſeem'd a vveeping teare, / Shed for the ſlaughtred husband by the vvife. / The red bloud reek'd to ſhevv the Painters ſtrife, / And dying eyes gleem'd forth their aſhie lights, / Like dying coales burnt out in tedious nights."
• (intransitive)
  "Quick to redeem the Prey their plighted Lords / Advance, the Palace gleams vvith ſhining Svvords."
• (intransitive)
  "Mr. Crawley spoke these words without hesitation, even with eloquence, standing upright, and with something of a noble anger gleaming over his poor wan face; and, I think that while speaking them, he was happier than he had been for many a long day."

verb

• (intransitive, falconry, obsolete) Of a hawk or other bird of prey: to disgorge filth from its crop or gorge.
  "Gleam, a term uſed after a hawk hath caſt and gleameth, or throweth up filth from her gorge."