英和和英

unable to open file

open the map

overwrite that file

The curtain rises

The plays begins

The performance commences.

open wide

open

visible files

Open the screen

split open

open a package

reeve an opening

open formation

open formally

to open the curtain―raise the curtain―draw （back） the curtain

to extract the square root （of a number）

an open texture

to disclose

open out a map

a natural opening in something

something to be opened

open ground

to hold a meeting

cut open

to start a ceremony

to break the seal―（みだりに開封するの意味なら）―tamper with the seal

to extract the square root of a quantity

to extract the square root of a number

to open again after closing