Definitions for "break open"
Keywords:  burst, suddenly, gun, hinge, barrels
open with force; "He broke open the the picnic basket"
break open or apart suddenly; "The bubble burst"
erupt or intensify suddenly; "Unrest erupted in the country"; "Tempers flared at the meeting"; "The crowd irrupted into a burst of patriotism"
Keywords:  ply, perforated, tabs, prize, winners
A multi-ply card made from paper with perforated tabs. The play area of the card is covered to conceal numbers, letters or symbols, some of which have been designated in advance as prize winners.