esker
es.ker \'es-k*r\ n [IrGael eiscir ridge] : a long narrow ridge or mound of sand, gravel, and boulders deposited by a stream flowing on, within, or beneath a stagnant glacier
es.ker \'es-k*r\ n [IrGael eiscir ridge] : a long narrow ridge or mound of sand, gravel, and boulders deposited by a stream flowing on, within, or beneath a stagnant glacier