"covert" in the noun sense
1. covert
a flock of coots
2. screen, cover, covert, concealment
a covering that serves to conceal or shelter something
"a screen of trees afforded privacy"
"under cover of darkness"
"the brush provided a covert for game"
"the simplest concealment is to match perfectly the color of the background"
"covert" in the adjective sense
1. covert
secret or hidden not openly practiced or engaged in or shown or avowed
"covert actions by the CIA"
"covert funding for the rebels"
2. covert
of a wife) being under the protection of her husband
"a woman covert"
Source: WordNet® (An amazing lexical database of English)
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