one who has large, round, or fat calves on one's legs (see Molina)
Alonso de Molina:
cotztatapayoltic. panturrilludo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 24v. col. 2. Thanks to Joe Campbell for providing the transcription.