1. auld langsyne, langsyne, old times, good old days, past, past times, yesteryear
usage: past times remembered with nostalgia
Adverb
1. long ago, long since, lang syne
usage: of the distant or comparatively distant past; "We met once long ago"; "they long ago forsook their nomadic life"; "left for work long ago"; "he has long since given up mountain climbing"; "This name has long since been forgotten"; "lang syne" is Scottish
Adverb
1. long ago, long since, lang syne
usage: at a distant time in the past (chiefly Scottish)