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lunchbox

[luhnch-boks]
noun
  1. a small container, usually of metal or plastic and with a handle, for carrying one's lunch from home to school or work.
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Origin of lunchbox

First recorded in 1860–65; lunch + box1
Also called lunchpail, lunch·buck·et [luhnch-buhk-it] /ˈlʌntʃˌbʌk ɪt/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for lunch box

lunchbox

noun
  1. a container for carrying a packed lunch
  2. British and Australian jocular a man's genitals
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012