To break cover

to burst forth from a protecting concealment, as game when hunted.
to start from a covert or lair; - said of game.

See also: Break, Cover

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
They will be taught to fire wellaimed shots or suppressive shots designed to deny the opposition the ability to break cover and engage.
TIGER Woods was last night thought to be set to break cover and head out to sea on his yacht.
The car is not scheduled to break cover until next Tuesday's launch day at Rocking-ham.
Keen shot Philip failed to break cover all day, staying inside Sandringham House.
The heavies stayed low key for most of the four-day event but were forced to break cover as fans burst through the galleries and tried to mob the 21-year-old wonder kid on the final hole.