ăd-aggĕro — Lewis & Short
ăd-aggĕro, āvi, ātum, 1, v. a. (a double ad, as in adalligo),
cum ver adpetet, terram adaggerato bene,Cato, R. R. 94: so,
terram circa arborem,Col. 5, 11, 8: terra Nilo adaggerata, brought down or deposited by the Nile, Plin. 13, 11, 21, § 69:
nitro et sale adaggeratis,id. 36, 12, 17, § 81.