twinkle

Concise Oxford English Dictionary © 2008 Oxford University Press:
twinkle/ˈtwɪŋkl/

▶verb

• 1 (of a star or light) shine with a gleam that changes constantly from bright to faint.

  ■ (of a person's eyes) sparkle, especially with amusement.

• 2 (of a person's feet) move lightly and rapidly.

▶noun a twinkling sparkle or gleam.

– phrases
in a twinkling (of an eye) in an instant.

– derivatives
twinkler noun,
twinkly adjective .

– origin OE twinclian (v.), of Gmc origin.