[open question] {n. phr.} A debatable issue. * /Whether assisted suicide […]

[open secret] {n.} Something that is supposed to be a secret […]

[open sesame] {n. phr.}, {literary} Immediate means of entrance, or unobstructed […]

[open shop] {n. phr.} A factory or firm that employs both […]

[open the door] {v. phr.} To allow more action or discussion; […]

[open the floodgates] {v. phr.} To let loose an outburst of […]

[open up] {v.} 1. To show for the first time; make […]

[open up one's eyes] See: [OPEN ONE'S EYES].

[Open-Collar Workers] People who work at home or telecommute.

[open-door policy] {n. phr.} A policy that states that newcomers are […]