1.VerbUsed other than figuratively or idiomatically: see open, door.
2.VerbTo allow access or facilitate. .mw-parser-output .object-usage-tag{font-style:italic}.mw-parser-output .deprecated{color:var(--wikt-palette-grey-lime-8,olivedrab)}[with to or for ‘someone/something’]
"the court's decision today opens the door to future partisan manipulations; his vacancy opened the door for young people who wanted a position"