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411

or 4-1-1

[ fawr-wuhn-wuhn ]
/ ˈfɔrˌwʌnˈwʌn /
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Definition of 411

a telephone number for directory information.
Informal.the 411, information or knowledge, usually about an event or activity and acquired by oral communication: Here's the 411 on tomorrow night's party.Planning for Spring Break in Cabo—what's the 411?"
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Origin of 411

First recorded in 1930–35 for def. 1, and in 1980–85 for def. 2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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