a point, marked by a monument, situated at a known distance from and bearing relative to a corner that is used as a reference point but on which it is impossible to place a monument.Compare corner(def 10a).
Words nearby witness corner
Origin of witness corner
An Americanism dating back to 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020