Meaning of “open” - Learner’s Dictionary

open

adjective us uk /ˈəʊpən/
Extra Examples
Can you hold the door open please?The suitcase snapped open and everything fell out.The window was wide open.I went into this marriage with my eyes open.I left the door open and the cat got out.
NOT CLOSED

A2 not closed or fastened:

an open door/window
Someone had left the gate wide open.
Is there a bottle of wine already open?
I threw all the doors open (= opened them quickly).
A magazine was lying open on her lap.
The kids were so tired they could hardly keep their eyes open.
DOING BUSINESS

A1 A shop or business is open during the time it is available for business or serving customers:

Most shops are open on Sundays now.
COMPUTERS

If a computer document or program is open, it is ready to be read or used.

WITHOUT BUILDINGS [ always before noun ]

B1 An open area of land has no buildings on it or near it:

open fields
NOT COVERED [ always before noun ]

without a roof or cover:

an open courtyard
FOR EVERYONE

If a place or event is open, everyone can go to it or become involved in it:

an open debate
Are the gardens open to the public?
HONEST

An open person is honest and does not hide their feelings:

He's very open and friendly.
NOT HIDDEN [ always before noun ]

Open feelings, usually negative ones, are not hidden:

NOT DECIDED

If a decision or question is open, it has not yet been decided:

We don't have to make a firm arrangement now. Let's leave it open.
have/keep an open mind

B2 to wait until you know all the facts before you form an opinion about something or judge someone:

The cause of the fire is still unclear and we are keeping an open mind.
open to discussion/suggestions, etc

willing to consider a discussion/suggestions, etc:

This is only a proposal. I'm open to suggestions.
open to abuse/criticism, etc

likely to be abused/criticized, etc:

The system is wide open to abuse.
→ See also with your eyes open

(Definition of “open adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)