acuario.

(a loanword from Spanish)

Headword: 
acuario.
Principal English Translation: 

aquarius, a sign of the zodiac; actually, originally a loanword from Latin, although possibly similar in sixteenth-century Spanish
Lori Boornazian Diel, The Codex Mexicanus: A Guide to Life in Late-Sixteenth-Century New Spain (Austin: University of Texas Press, 2018), 172.

Orthographic Variants: 
aquario, qualliyos, aquaioyos, aquariyos
Attestations from sources in English: 

de aquario. quitoznequi ce tlacatl ateca = Aquarius: that is, a person of the water people. (central Mexico, early seventeenth century)
Codex Chimalpahin: Society and Politics in Mexico Tenochtitlan, Tlatelolco, Culhuacan, and Other Nahuatl Altepetl in Central Mexico; The Nahuatl and Spanish Annals and Accounts Collected and Recorded by don Domingo de San Antón Muñón Chimalpahin Quauhtlehuanitzin, eds. and transl. Arthur J. O. Anderson and Susan Schroeder (Norman: University of Oklahoma Press, 1997), vol. 2, 128–130.

Aquarius, a sign of the zodiac; Chimalpahin included this in his reckoning of the intersection of the Aztec and Christian calendars (central Mexico, seventeenth century)
Codex Chimalpahin: Society and Politics in Mexico Tenochtitlan, Tlatelolco, Culhuacan, and Other Nahuatl Altepetl in Central Mexico; The Nahuatl and Spanish Annals and Accounts Collected and Recorded by don Domingo de San Antón Muñón Chimalpahin Quauhtlehuanitzin, eds. and transl. Arthur J. O. Anderson and Susan Schroeder (Norman: University of Oklahoma Press, 1997), vol. 2, 120–121 and 128–129.