TWIN'KLE, verb intransitive

1. To sparkle; to flash at intervals; to shine with a tremulous intermitted light, or with a broken quivering light. The fixed stars twinkle; the planets do not.

These stars do not twinkle when viewed through telescopes that have large apertures.

2. To open and shut the eye by turns; as the twinkling owl.

3. To play irregularly; as, her eyes will twinkle

TWIN'KLE