pin'-a-k'-l (pterugion (Mt 4:5; Lu 4:9, the Revised Version margin "wing")) "The pinnacle of the temple" is named as the place to which the devil took Jesus, and there tempted Him to cast Himself down. It is not known what precise elevated spot is meant, whether a part of the roof of the temple itself, or some high point in the adjacent buildings overlooking the deep ravine. It was more probably the latter.
The International Standard Bible Encyclopedia
Pinnacle
The International Standard Bible Encyclopedia, James Orr (1915). Public domain, from the CrossWire SWORD module.