The plural form, ar, er, signifying the confluence of waters, occurs in Ohre, Er-furt, Ohr-druf, and Neck-ar.

The Scandinavian forms for water, are, A, Aa, and Aae.

In England we find Cald-a, Routh-a, Rath-a, Ay-am, Ay-cliffe, &c.

Aa occurs as the name of several rivers in Hanover, France, Brabant, Groningen, and Switzerland.

Aa is found in

Ain, the river, forms part of the following names:—Glomm-en, Alt-en, Ul-en, Sus-en, &c.

Beck (Scandinavian), a rivulet.—In England, the following places contain this root:—