great
blinding, bright, brilliant
sudden
brief, momentary, quick
occasional
rare
a rare flash of wit

lightning
laser
news (usually newsflash)
hot (AmE) (hot flush in BrE)
She was experiencing hot flashes as part of menopause.

experience, feel, have
He felt a brief flash of jealousy.
She had a sudden flash of inspiration.

emit
catch, detect, notice, see
We caught a flash of white in the bushes.

erupt
illuminate sth, light sth, light sth up
A bright flash of lightning lit up the sky.

blind
We were blinded by the flash.

flash from
The flashes from the guns illuminated the sky.

flash of
a sudden flash of light

built-in
camera

use
I don't think the picture will come out in this light. Try using the flash.

go off, work
The flash didn't go off.

photography

with (a) flash
I took it with flash.

briefly
It was only the sun, flashing briefly on her hair.

brightly

at
A car flashed its headlights at me.

suddenly
angrily, dangerously, menacingly
Her eyes flashed angrily.

with
Her eyes suddenly flashed with anger.

Flash is used with these nouns as the subject:
bulb, camera, eye, headlights, light, lightning, message, screen, sign, tooth, torch, window

Flash is used with these nouns as the object:
badge, grin, headlights, light, look, smile, torch