1) Medieval language 
Middle Irish (sometimes called Middle Gaelic) is the name given by historical philologists to the Goidelic language spoken in Ireland, Scotland and the Isle of Man from the 10th to 12th centuries; it is therefore a contemporary of late Old English and early Middle English. The modern Goidelic languages—Irish, Scottish Gaelic and Manx—are all d...
[n] - Irish Gaelic from 1100 to 1500
noun Irish Gaelic from 1100 to 1500