1.  twinkle(n = noun.event) scintillation, sparkling - a rapid change in brightness; a brief spark or flash; Array
is a kind of alteration, change, modification
Derived forms verb twinkle₁, verb twinkle₂

2.  twinkle(n = noun.attribute) light, spark, sparkle - merriment expressed by a brightness or gleam or animation of countenance; "he had a sparkle in his eye"; "there's a perpetual twinkle in his eyes"
is a kind of verve, vitality, aspect, expression, face, facial expression, look
Derived form adjective twinkly₁

1.  twinkle(v = verb.perception) blink, flash, wink, winkle - gleam or glow intermittently; "The lights were flashing"
is one way to radiate
Derived forms noun twinkle₁, noun twinkler₁
Sample sentences: Lights twinkle on the horizon; The horizon is twinkleing with lights

2.  twinkle(v = verb.weather) scintillate, winkle - emit or reflect light in a flickering manner; "Does a constellation twinkle more brightly than a single star?"
is one way to beam, shine
Derived forms noun twinkle₁, noun twinkler₁
Sample sentences: The coins twinkle

1.  To open and shut the eye rapidly; to blink; to wink. [1913 Webster]
"The owl fell a moping and twinkling." [1913 Webster]

2.  To shine with an intermitted or a broken, quavering light; to flash at intervals; to sparkle; to scintillate. [1913 Webster]
"These stars do not twinkle when viewed through telescopes that have large apertures." [1913 Webster]
"The western sky twinkled with stars." [1913 Webster]

1.  A closing or opening, or a quick motion, of the eye; a wink or sparkle of the eye. [1913 Webster]
"Suddenly, with twinkle of her eye,
The damsel broke his misintended dart." [1913 Webster]

2.  A brief flash or gleam, esp. when rapidly repeated. [1913 Webster]

3.  The time of a wink; a twinkling. Dryden. [1913 Webster]

twinkle, v. & n.
--v.
1 intr. (of a star or light etc.) shine with rapidly intermittent gleams.
2 intr. (of the eyes) sparkle.
3 intr. (of the feet in dancing) move lightly and rapidly.
4 tr. emit (a light or signal) in quick gleams.
5 tr. blink or wink (one's eyes).
--n.
1 a a sparkle or gleam of the eyes. b a blink or wink.
2 a slight flash of light; a glimmer.
3 a short rapid movement.

Idiom:
in a twinkle (or a twinkling or the twinkling of an eye) in an instant.

Derivative:
twinkler n. twinkly adj.

Etymology:
OE twinclian

VB  be instantaneous, twinkle, flash.

VB  shine, glow, glitter, glister, glisten, twinkle, gleam, flare, flare up, glare, beam, shimmer, glimmer, flicker, sparkle, scintillate, coruscate, flash, blaze, be bright, reflect light, daze, dazzle, bedazzle, radiate, shoot out beams, fulgurate, clear up, brighten, lighten, enlighten, levin, light, light up, irradiate, shine upon, give out a light, hang out a light, cast light upon, cast light in, throw light upon, throw light in, shed light upon, shed luster upon, illume, illumine, illuminate, relume, strike a light, kindle.

VB  be dim, grow dim, flicker, twinkle, glimmer, loom, lower, fade, pale, pale its ineffectual fire, render dim, dim, bedim, obscure, darken, tone down.