Irish Gaelic featuring in teachers’ seminar (4)
I believe the answer is:
erse
'irish gaelic' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for erse that I've seen before include "Old Gaelic for the seer" , "Irish Gaelic language" , "Old name for Celtic languages" , "Name sometimes given to languages of the Celts in Ireland and Scotland" , "Old language spoken by strange seer" .)