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ERD
The earth.
Erd shrew, the general European shrew (Sorex vulgaris); the shrewmouse.
Origin: OE. Erd, eard, land, earth, country, AS. Eard; akin to OS. Ard dwelling seat, OHG. Art plowing, tillage, Icel. Orth crop, and to L. Arare to plow, E. Ear to plow.
Source: Websters Vocabulary