IPA: //ˈɡliːmi//
KK: /ɡlimi/
Having a shiny or bright appearance, often reflecting light.
The gleamy surface of the lake sparkled in the sunlight.
Comparative: gleamier
Superlative: gleamiest
Gleamy → It is formed from "gleam" (from Old English "glēam", meaning a bright light or shine) and the suffix "-y" (meaning characterized by). The word "gleamy" means characterized by a bright light or shine.
Think of a bright light or shine ('gleam') that makes something appear shiny or radiant, which is what 'gleamy' describes.