All 6 Uses

Pearl Harbor
in
Unbroken - adapted for young adults
(Edited)

Below, Pearl Harbor, headquarters of the United States Pacific Fleet, was beginning to stir.
p. 46.2

Pearl Harbor = Hawaiian harbor where U.S. naval base was surprise attacked--leading to the United States entering World War II
Behind him, 180 warplanes, emblazoned with Japan's red circle emblem, dove for Pearl Harbor.
p. 46.6
Japan has attacked Pearl Harbor.
p. 46.9
In less than two hours over Pearl Harbor, Japan mauled America's navy and killed more than 2,400 people.
p. 49.5 *
Oahu was still ringing from the Pearl Harbor attack.
p. 60.1
While thousands of men would later be sought, this preliminary list included those accused of the worst crimes, including Hideki Tojo, mastermind of Pearl Harbor and the enslavement of POWs.
p. 244.9

Definitions:

(1) (Pearl Harbor)
Hawaiian harbor where U.S. naval base was surprise attacked by the Japanese on 7 Dec 1941
(2) (meaning too rare to warrant focus)