plural of open world

plural of opening night

plural of door opener

(music) A tuning of a guitar or other stringed instrument in which the strings sound a chord when strummed together without being pressed against the fretboard.

(UK) A system of bus operation where passengers may enter through various doors along the vehicle's length without having to pass the driver to buy or show a ticket.

plural of re-opening

(Of an object) that opens, or is designed to open automatically, or opens of its own accord.

(chess) Synonym of Ruy Lopez

simple past tense and past participle of open up

plural of open-topper