Dictionary

(of a source of light) to shine with a flickering light; to glimmer

Example: We could see the lights of the village twinkling in the distance.

(chiefly of eyes) to be bright with delight

Example: His shrewd little eyes twinkled roguishly.

To bat, blink or wink the eyes

To flit to and fro

Sparkling intermittently.

A shining with fast intermittent light.

A very short period, notionally the time it takes to blink the eyes.

Example: The housework was done in a twinkling.