(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.

(mechanics) A type of differential gear used in automobile construction, allowing for output shafts to have different angular velocity, while equalizing torque applied to each output shaft.

(military) A military unit formed up so as to allow space between its ranks. / (nautical) A naval formation in which ships are four cables'-length (2880 feet) apart.

(Australia) Freedom to act without repercussions; free rein.

(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.

Alternative form of reopening

plural of re-opening

Synonym of open-neck

A business model for software whereby the core is open-source and free, while closed-source add-ons are available for purchase.

(chiefly US) The practice of openly carrying a firearm in public.