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.
© Webster 1913.