/ˈɛdɪnb(ə)rə/·proper noun·Brittonic Din Eidyn from c. 600 CE; English form from c. 7th century·Reconstructed
Origin
English 'Edinburgh' combines a mysterious Brittonic name Eidyn with Old English burh (fortress) — when the Anglescaptured the ancient Brittonic fort of Din Eidyn, they swapped the Celtic word for 'fort' with their own.
Edinburgh's name preserves a Brittonic word (Eidyn) inside an English word (burh) — a linguistic fossil of the moment when English-speakingAngles took over a Brittonic-speaking fortress and translated half the name. The Scottish Gaelic name Dùn Èideann preserves the olderCelticstructure with 'dùn' (fort) instead of 'burh'.
Y Gododdin (c. 600 CE). 'Eidyn' is of uncertain meaning, possibly a personal name or regional name. The English name likely replaced the Brittonic 'Din' (fort) with the