Magh (Celt.), 'a plain;' as Armagh, Maynooth.

Mark (Teut.), 'a boundary;' Denmark, Mercia, Murcia.

Markt (Ger.), 'a market;' as Bibertmarkt.

Medina (Ar.), 'city;' as Medina, Medina-Sidonia.

Mere, Moor (A.S.), 'a lake' or 'marsh;' as Mersey, Blackmore.

Minster (A.S.), Münster (Ger.), 'a monastic foundation;' as Westminster, Neumünster.

Mor (Celt.), 'great;' Benmore ('great mountain').

Mor (Celt.), 'the sea;' as Moray, Armorica, Morlaix, Glamorgan, Morbihan.

Mull (Gael.), 'a headland;' as Mull of Galloway.

Nagy (Hungarian), 'great;' as Nagy-Koros, Nagy-Karoly.