[ neez-uhp ]
/ ˈnizˌʌp /

noun British Informal.

a party or lively gathering, usually including dancing.

Origin of knees-up

by ellipsis from Knees up, Mother Brown a popular dance, originally a song with the same title (1939) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for knees-up


noun plural knees-ups

a boisterous dance involving the raising of alternate knees
a lively noisy party or celebration, esp one with dancing

Word Origin for knees-up

C20: from the song "Knees up Mother Brown" to which the dance is performed
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