Meaning of “gleam” - Learner’s Dictionary

gleam

noun [ no plural ] uk us /ɡliːm/
LIGHT

a pleasant, soft light from something that shines:

the gleam of sunlight on the frozen lake
EXPRESSION

an expression in someone's eyes:

She had a strange gleam in her eye.

(Definition of “gleam noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)