Seignior \Seign"ior\, n. [OF. seignor, F. seigneur, cf. It. signore, Sp. se[~n]or from an objective case of L. senier elder. See Senior.]

1. A lord; the lord of a manor.

2. A title of honor or of address in the South of Europe, corresponding to Sir or Mr. in English.

Grand Seignior, the sultan of Turkey.

Source: Webster's Revised Unabridged Dictionary (1913)