Definition of "eccho"

Farwel ye guilded follies, pleasing troubles, Farwel ye honour'd rags, ye glorious bubbles; Fame's but a hollow eccho, gold pure clay, Honour the darling but of one short day.

1676, Izaak Walton, The Compleat Angler‎

And suddainly hearing the fall of trees, through the force of a whyrlewinde, & noise of the broken bowghes, with a redoubled and hoarse sound a farre of, and yet brought to the eccho of the water thorow the thick wood, I grew into a new astonishment.

1592, R.D., Hypnerotomachia‎