“Open” can have many multiple meanings, depending on the context in which it is used. In general, however, the word “open” refers to something that is not closed or blocked off. Something that is open can be accessed or entered. It can also refer to something that is not covered or hidden.
In terms of physical objects, the word “open” typically means that a door, window, container, etc., is not closed shut. This meaning also extends to figurative uses of the word; for example, if someone says they keep an “open mind,” they are saying they are willing to consider new ideas and perspectives.
When used in relation to people or animals, the word “open” usually signifies that someone is approachable and welcoming. An open person tends to be friendly and easy to talk to. They might also be described as being honest and candid with their words and actions.