to force a person or animal into a position from which they cannot easily escape:
Once the dog was cornered, he began to growl.
to go to someone who is trying to avoid you, and make them listen to you:
Later, he cornered Jenny on the stairs and asked her what was wrong.
to gain control of the whole supply of a particular kind of goods:
They've been trying to corner the market by buying up all the wheat in sight.
if a car corners, it goes around a corner or bend in the road