Pearl Harbor UK /ˌpɜːl ˈhɑːbə/US /ˌpɝ˞l ˈhɑɹbɚ/noun 2verb 2forms 3 noun2 •A sneak attack, often using underhanded measures.Most Americans wanted no more Pearl Harbors, but they now expected Germany to attempt one. — 2002 •A seminal dramatic event that unites a community and arouses it into action against an enemy.For all practical purposes, the United States is undergoing an electronic Pearl Harbor, and the target is one of the most crucial segments of our way of life: Information. — 1991 verb2 •(slang) To attack by surprise; to subject to a sneak attack.The first and second ships had been successfully Pearl Harbored. The third was not to be surprised. As we approached, she dropped her net and fled. We pursued. — 2000 •(slang, rare) To take rudely by surprise.Of course, with the Soviets' launch of Sputnik, the Americans had been Pearl Harbored in space. — 2001 formsPearl Harbored · Pearl Harboring · Pearl Harbors