Lewis Short
ablăquĕātĭo (noun F) : ablaqueo
* A digging or loosening of the soil round the roots of a tree, Col. 4, 4, 2; 4, 8, 2; Plin. 12, 15, 33, § 66 al.
* Concr., the trench itself made by digging, Col. 5, 10, 17 Schneid.
Charlton T. Lewis, Charles Short, A Latin Dictionary