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English definition of “open”

open

verb (NOT CLOSED)    /ˈəʊ.pən/ US  /ˈoʊ-/
A1 [I or T] to move something to a position that is not closed , or to make something change to a position that is not closed : Could you open the window , please ? You can open your eyes now - here's your present . The flowers open (out) in the morning but close again in the afternoon . From the kitchen there is a door that opens (out) into/onto the garden .informal "Open up (= open the door ) - it's the police !" shouted the police officer , banging on the door .Unfastening and opening A2 [T] to remove or separate part of a container or parcel so that you can see or use what it contains : Don't open a new bottle just for me. I couldn't wait to open the letter .Unfastening and opening Grammar:Open or opened?We use open as an adjective to mean ‘not closed’:
(Definition of open verb (NOT CLOSED) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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