—adj. secret or disguised (a covert glance; covert operations).
—n.
1 a shelter, esp. a thicket hiding game.
2 a feather covering the base of a bird's flight-feather.
Phrases and idioms:
covert coat a short, light, overcoat worn for shooting, riding, etc.
Derivatives:
covertly adv. covertness n.
Etymology: ME f. OF covert past part. of covrir COVER
Useful english dictionary. 2012.