flash a smile

flash (one) a smile

To smile at one, usually quickly and perhaps unexpectedly. She was sad this morning, but I think she's feeling better now—she flashed me a smile before she left.
See also: flash, smile

flash a smile (at someone)

Fig. to smile quickly and perhaps briefly at someone. She flashed a smile at me as if she recognized me.
See also: flash, smile
References in periodicals archive ?
Pretend you just noticed him right before you reach him, then catch his gaze and flash a smile as you pass.