Etymology

derry

D2E1R1R1Y4

Today it means: A meaningless refrain or chorus. Full definition →

Irish Doire ← Old Irish daire ← Proto-Celtic *daru
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derry · interjection1

Uncertain. First attested in c. 1545–1555.

Derry · proper noun2

  1. Proto-Celtic · derived from*daru
  2. Old Irish · derived fromdaire“oak forest”
  3. Irish · derived fromDoire
  4. English todayDerry

From Irish Doire, from doire (“oak grove”), from Old Irish daire (“oak forest”), from Proto-Celtic *daru.

Etymology from Wiktionary, CC BY-SA 4.0.