langsyne

lang·syne

also lang syne L0041100 (lăng-zīn′)Scots adv. Long ago; long since.n. Time long past; times past.

[Scots lang syne, from Middle English lang sine : long, lang, long; see long¹ + sine, since (contraction of sithen, sithens; see since).]

(ˌlæŋˈsəɪn; -ˈsaɪn) advlong ago; long sincentimes long past, esp those fondly remembered. See also auld lang syne[C16: Scottish: long since]

(ˌlæŋˈzaɪn, -ˈsaɪn)
Scot. adv. 1. long since; long ago. n. 2. time long past. [1490–1500; lang, Scots form of long¹ + syne]

Thesaurus

Noun	1.	langsyne - past times remembered with nostalgiaauld langsyne, good old days, old timespast, past times, yesteryear - the time that has elapsed; "forget the past"
Adv.	1.	langsyne - at a distant time in the past (chiefly Scottish)Scotland - one of the four countries that make up the United Kingdom of Great Britain and Northern Ireland; located on the northern part of the island of Great Britain; famous for bagpipes and plaids and kilts