EMERALD
NOUNS
1300 — SMARAGD an emerald; a precious stone of a bright green colour
1382 — SMARAGDUS an emerald; a precious stone of a bright green colour
1599 — SMARALD an emerald; a smaragd → obs.
1832 — EMERANT the emerald → Sc. obs.
1920 — IRISH FAVOURITE an emerald → US sl.
Lexicophilia 