OPEN ITS DOORS

{v. phr.} 1. To allow someone or something to enter or join; become open. * /That college was started for women only, but a few years ago it opened its doors to men./ 2. To begin doing business; open. * /Proffitts Department Store is having a birthday sale; it first opened its doors fifty years ago this month./ Contrast: CLOSE ITS DOORS.