No. 1

[ nuhm-ber wuhn ]

noun
  1. number one.

Origin of No. 1

1
First recorded in 1595–1605

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British Dictionary definitions for NO1

NO1

/ text messaging /


abbreviation for
  1. no-one

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