1twin·kle 
/ˈtwɪŋkəl/ noun
/ˈtwɪŋkəl/ noun [singular] : a quick flash of light : a sparkle or flicker of light
▪ We saw the twinkle of a candle in the window.
▪ We saw the twinkle of a candle in the window.
a twinkle in your eye
: a friendly or happy expression in your eyes
▪ He always talks about his children with a twinkle in his eye. ▪ Her grandchildren put a twinkle in her eye. [=made her happy]
▪ He always talks about his children with a twinkle in his eye. ▪ Her grandchildren put a twinkle in her eye. [=made her happy]
in the twinkle of an eye
informal : very quickly : in a very short time
▪ He was back in the twinkle of an eye.
▪ He was back in the twinkle of an eye.
— twin·kly /ˈtwɪŋkəli/ adjective, twin·kli·er; -est [also more twinkly; most twinkly]
▪ twinkly lights
/ˈtwɪŋkəli/ adjective, twin·kli·er; -est [also more twinkly; most twinkly] ▪ twinkly lights
