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Meaning of auld lang syne

auld lang syne

Pronunciation: (ôld' lang zīn', sīn'), [key]
— Scot. and North Eng. Scot. and North Eng.
  1. old times, esp. times fondly remembered.
  2. old or long friendship.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.