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twin bed

American  

noun

  1. a twin-size bed, especially one of a matching pair in a bedroom; single bed.


twin bed British  

noun

  1. one of a pair of matching single beds

"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

Etymology

Origin of twin bed

An Americanism dating back to 1915–20