throw open tothrow open (something) to (someone/something)
to make something available to someone or something.
Ticket sales will be thrown open to the public next week.The artist threw open his studio to me and taught me to be a serious painter.
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throw open (something) to (someone or something)
To provide access to something to a particular person, group, etc. Often used in the passive. We plan to throw open the position to applicants as early as next week.The formerly private club was thrown open to the general public after the management change.