There was a Germanic form of the PIE root which yielded Old Norse lögr "sea flood, water," Old English lacu "stream, pool, pond," lagu "sea flood, water, extent of the sea," leccan "to moisten" (see leak (v.)). In Middle English, lake, as a descendant of the Old English word, also could mean "stream; river gully; ditch; marsh; grave; pit of hell," and this might have influenced the form of the borrowed word.
former large lake of northern Egypt, from Greek moiris, from Egyptian mer-ur "big lake," from mer "lake" + ur "big."
Canadian province, also one of the Great Lakes between Canada and New York, from Mohawk (Iroquoian) ontari:io "beautiful lake" or "great lake," from /-qtar-/ "lake, river." Related: Ontarian.