Crossword Clue:

to break a hole in

Answer	Crossword Clue
ACE	Good thing to have in a hole
GNAW	One way to make a hole in the wall
ERR	Try to fit a square peg in a round hole, e.g.

ACE	Good card to have "in the hole"
ACE	Good thing to have in the hole
STUDPOKER	Game that gave rise to the expression "ace in the hole"