Meaning

• A sparkle or glimmer of light

• A sparkle of delight in the eyes.

  "He was a rotund, jolly man with a twinkle in his eye."

• A flitting movement

• A brief moment; a twinkling.

• The female genitalia.

  "The popular Swedish cartoon song about genitals was translated as "Willie and Twinkle"."

Meaning

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

  "We could see the lights of the village twinkling in the distance."

• (chiefly of eyes) to be bright with delight

  "His shrewd little eyes twinkled roguishly."

• To bat, blink or wink the eyes

• To flit to and fro