mether UK /ˈmɛðə/US /ˈmɛðɚ/noun 1number 1forms 1 noun1 •(Ireland, historical) A communal drinking vessel used in Gaelic times for drinking mead. It had squared sides and one drank from a corner. Also, a trophy in this shape.I raise to you, O Queen, this Loving Cup, this Mether, Filled with Mead Made from honey of the heather — 1912 number1 •(dialect) Four in the old counting system of Northern England. formsmethers