Out-let opening obstruction
at-the-opening (opening only) order
Opening-Closing-Opening Test
reform and opening-up; reform and opening to the outside world
an out and out reactionary political force
an out-and-out country life
casting-out-9 check=casting out nines
Out of sight and out of mind
two way serial in parallel out and parallel in serial out transceiver
[endoscopic]biopsy channel opening