miach
Definitions (by source)
miach, a measure (of wheat, etc. ; here, of salt) ; apl. miaich, 3809.
Desiderius, otherwise called Sgáthán an Chrábhaidh. Editor: Thomas F. O’Rahilly.
m., measure, sack.
Stories from Keating's History of Ireland. Editor: Osborn Bergin.