corner up
verb1
Dated To form one or more corners.
- Those two properties cornered up in the vicinity of Main Street.
- The fenceposts will corner up the yard.
2
Slang To sell drugs on a street corner; to go to such a spot to sell drugs.
African-American Vernacular
3
Informal To be in a corner (of a room); to trap or be trapped by assailants in the corner of a room.
4
Broadly, Informal to corner or be cornered (To trap in a position of great difficulty or hopeless embarrassment).