Seigniory \Seign"ior*y\, n.; pl. -ies. [OE. seignorie, OF. seigneurie, F. seigneurie; cf. It. signoria.]

1. The power or authority of a lord; dominion.

O'Neal never had any seigniory over that country but what by encroachment he got upon the English. --Spenser.

2. The territory over which a lord holds jurisdiction; a manor. [Written also seigneury, and seignory.]

Source: Webster's Revised Unabridged Dictionary (1913)