colotzin.

Headword: 
colotzin.
Principal English Translation: 

a vinegaroon (British spelling: vinegarroon), a whip scorpion (see Karttunen)

Orthographic Variants: 
cōlōtzin
IPAspelling: 
koːloːtsin
Frances Karttunen: 

CŌLŌTZIN vinegaroon, whip scorpion / vinagrillo (Z) [(2)Zp.129,224]. SeeTEHUITZCŌLŌ-TL, CŌLŌ-TL.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 41.