raso.

(a loanword from Spanish)

Headword: 
raso.
Principal English Translation: 

flat, smooth, shiny (said of cloth, such as silk), or without a back (such as a chair without a back)
(a loanword from Spanish)

Attestations from sources in English: 

ce mancas raso asul [S. Francisco Analcotitlan (Jalisco?), 1652]
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 8.