present participle of open the floodgates

(idiomatic) To allow some action to proceed more swiftly or to a greater extent

(historical, of garments) Having wide legs and reaching below the knees but higher than the ankles (not tied or closed at the knees).

present participle of open up

Having one's arms open and apart / (idiomatic) cordial; friendly; welcoming

The first night, evening, or day, of a spectacle or show. / The first event in a new venue.

Used other than figuratively or idiomatically: see open, wide. / (idiomatic, intransitive) To open one's mouth wide, to gape

(now rare) Frank, unsecretive; not concealing one's feelings. / With the breast exposed; (of clothing) not covering the breast.

(transitive) To use a sudden, quick hand motion to open (something relatively small like a book, a lighter, etc.).

To begin operations; to set things in motion.