su.

(a loanword from Spanish)

Headword: 
su.
Principal English Translation: 

his, her, their
(a loanword from Spanish)

Attestations from sources in English: 

itech poviz ycamara de su mgt (Tlaxcala, 1547)
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 22.

quinonotzac su señoria obispo auh yn señr obispo (Jalostotitlan, Jalisco, 1611)
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 27.