[经] 对一种法律关系的承认

Attornment \At*torn"ment\, n. [OF. attornement, LL.
attornamentum. See {Attorn}.] (Law)
The act of a feudatory, vassal, or tenant, by which he
consents, upon the alienation of an estate, to receive a new
lord or superior, and transfers to him his homage and
service; the agreement of a tenant to acknowledge the
purchaser of the estate as his landlord. --Burrill.
Blackstone.