What the "angler" on a deep-sea anglerfish can do (4)

I believe the answer is:

glow

(Other definitions for glow that I've seen before include "Emit light and heat without flame" , "Give out light without flame" , "Shine, maybe in dark" , "Emanate light" , "Redness of the cheeks" .)

I've seen this clue in The New York Times.

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