[open fire] {v. phr.} To begin shooting. * /The big warship […]

[open heart] {n.} 1. No hiding of your feelings; frankness; freedom. […]

[open its doors] {v. phr.} 1. To allow someone or something […]

[open letter] {n. phr.} A public message in the form of […]

[open market] {n. phr.} Goods or securities available for purchase by […]

[open marriage] {n. phr.} An arrangement by mutual agreement between husband […]

[open one's eyes] or [open up one's eyes] {v. phr.} To […]

[open one's heart] {v. phr.} 1. To talk about your feelings […]

[open onto] {v. phr.} To have a view of. * /Our […]

[open Pandora's box] See: [PANDORA'S BOX].