twinkle

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To shine with slight, intermittent gleams, as distant lights or stars; flicker; glimmer. See Synonyms at flash.
2. v. To be bright or sparkling, as with merriment or delight: eyes that twinkled with joy.
3. v. To blink or wink the eyes. See Synonyms at blink.
4. v. To move about or to and fro rapidly and gracefully; flit.
5. v. To emit (light) in slight, intermittent gleams.
6. n. A slight, intermittent gleam of light; a sparkling flash; a glimmer.
7. n. A sparkle of merriment or delight in the eye.
8. n. A brief interval; a twinkling.
9. n. A rapid to-and-fro movement.

Century Dictionary and Cyclopedia

1. To shut an eye or the eyes with an involuntary twitch or with a quick voluntary and significant action; blink; wink.
2. Of the eyelids, to open and shut with frequent involuntary twitches; hence, of anything that moves rapidly, to dart to and fro.
3. To pass in and out of sight rapidly, as a light; flash at almost insensible intervals; shine with quick, irregular gleams; scintillate; sparkle, as a star.
4. To open and shut rapidly; wink; blink.
5. To emit in quick gleams; flash out.
6. To influence or charm by sparkling.
7. n. A twitching of the eyelid; a blinking; a wink.
8. n. A quick, tremulous light; a glimmer; a sparkle; a flash.
9. n. The time required for a wink; a twinkling.

Wiktionary

1. v. of a source of light to shine with a flickering light; to glimmer
2. v. to be bright with delight
3. v. to bat, blink or wink the eyes
4. v. to flit to and fro
5. n. a sparkle or glimmer of light
6. n. a sparkle of delight in the eyes.
7. n. a flitting movement

GNU Webster's 1913

1. v. To open and shut the eye rapidly; to blink; to wink.
2. v. To shine with an intermitted or a broken, quavering light; to flash at intervals; to sparkle; to scintillate.
3. n. A closing or opening, or a quick motion, of the eye; a wink or sparkle of the eye.
4. n. A brief flash or gleam, esp. when rapidly repeated.
5. n. The time of a wink; a twinkling.

WordNet 3.0

1. v. emit or reflect light in a flickering manner
2. n. a rapid change in brightness; a brief spark or flash
3. v. gleam or glow intermittently
4. n. merriment expressed by a brightness or gleam or animation of countenance