se·ñor 
(sān-yôr, sĕ-nyôr)
(sān-yôr, sĕ-nyôr)n. pl. se·ño·res (sān-yôrās, sĕ-nyōrĕs)
1. Abbr. Sr.
a. Used as a courtesy title before the surname, full name, or professional title of a man in a Spanish-speaking area.
b. Used as a form of polite address for a man in a Spanish-speaking area.
2. A Spanish or Spanish-speaking man.
[Spanish, from Old Spanish sennor, from Vulgar Latin *senior, lord, from Latin, senior; see SENIOR.]