Definition of corner:
where two converging lines meet; an angle
, either external or internal; the space in the angle between converging lines or walls which meet in a point
"the corners of the wire mesh were reinforced with little blobs of solder."
(someone) into a corner or other confined
space; to trap
in a position of great difficulty or hopeless embarrassment
"the cat had cornered a cricket between the sofa and the television stand."