Definitions for "Western Wall"
The holiest site in Judaism, the Wall is the largest section of the Second Temple that is still standing following the Temple's destruction by the Roman Legion in 70 C.E.
("Ha-Kotel" (the Wall)). Remaining part of the retaining wall built late in the 1st cent. BCE around the Temple Mount in Jerusalem (i.e., not part of the Temple itself, but relating to the ground upon which the Temple was constructed). Early references may have been to the actual Western Wall of the Temple itself, the end where the holy of holies was situated. ( Jacobs, Louis, THE JEWISH RELIGION, p. 585.)
(Wailing Wall) Hebrew ha-kotel ha-ma'aravi, "the Western Wall," or simply ha-kotel, "the Wall" -- a high wall in Jerusalem on the Temple Mount believed to be part of the western section of the wall surrounding Solomon's Temple (some believe it to be Herod's Temple), where Jews have traditionally gathered for prayer. Jerome described Jews on the Mount of Olives in the fourth century A.D. wailing and lamenting as they looked upon the ruins of the Temple on the ninth day of the Hebrew month Av, a day of mourning for the Temple. The traditional Arabic term for the wall is El-Mabka, "the Place of Weeping." The name "Wailing Wall" is predominantly a European term introduced by the British after their conquest of Jerusalem from the Turks in 1917. Jews traditionally gathered here on Fridays to mourn, however, after the Six-Day War in 1967 and the reunification of Jerusalem under Israeli sovereignty, many have considered this to be a place of celebration.