What is 'train on'
Security camera trained on the entry doorIs it mean the camera set on the entry door and it points in a certain direction?

Question

What is 'train on'
Security camera trained on the entry doorIs it mean the camera set on the entry door and it points in a certain direction?

Answer

In this case, it means "pointed at" or "focused on".  The word "train" has a number of different definitions, so pay attention. The verb meanings all have a general sense of guiding towards something.

Answer

It means the camera is  situated against the entry door.

Answer

In this context "train" means to move something, like a gun or a camera, to point in a certain direction.

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