v. become available; "an opportunity opened up"

v. become open; "The door opened"

v. start to operate or function or cause to start operating or functioning; "open a business"

v. develop or come to a promising stage; "Youth blossomed into maturity"

v. unroll, unfold, or spread out or be unrolled, unfolded, or spread out from a furled state; "unfurl a banner"

v. make a hole into; "The needle pierced her flesh"

v. make a hole into or between, as for ease of separation; "perforate the sheets of paper"

v. separate or cause to separate abruptly; "The rope snapped"; "tear the paper"

v. extend in one or more directions; "The dough expands"

v. display the contents of a file or start an application as on a computer

v. become closed; "The windows closed with a loud bang"

v. cease to operate or cause to cease operating; "The owners decided to move and to close the factory"; "My business closes every night at 8 P.M."; "close up the shop"