twinkle

Short definition from Wiktionary

Verb

1. 1
   To shine with a flickering light; to glimmer.
2. 2
   To be bright with delight.
3. 3
   To bat, blink or wink the eyes.
4. 4
   To flit to and fro.

Noun

1. 1
   A sparkle or glimmer of light.
2. 2
   A sparkle of delight in the eyes.
3. 3
   A flitting movement.
4. 4
   A brief moment; a twinkling.
5. 5
   The female genitalia.