common in place names such as Mullingar An Muilleann Gearr the "short, running" mill

every hostelry must have access to a mill

The most ancient mills were of course hand mills first the simple rubbing stone or "saddle quern"

later the rotary mill

Ireland leads the way in mill technology in the sixth century

some of the earliest mills in Western Europe

then the water powered mill usually horizontal wheel turbine technology that appears to have come via Roman north Africa and Spain.

tidal mill at Nendrum