a wall in Jerusalem where Jews, on certain occasions, assemble for prayer and lamentation: traditionally believed to be the remains of the western wall of Herod's temple, destroyed by the Romans in a.d. 70.
Also called Wailing Wall.
British Dictionary definitions for Western Wall
Western Wall
noun
1.
(Judaism) a wall in Jerusalem, the last extant part of the Temple of Herod, held sacred by Jews as a place of prayer and pilgrimage Also called Wailing Wall