to have chest or breast pain from eating too much or as a result of being overly full (see Molina)
IPAspelling:
eːlteːmi
Alonso de Molina:
eltemi. n. (pret. onelten.) dolerme los pechos por auer comido mucho, o por estar repleto. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 28v. col. 2. Thanks to Joe Campbell for providing the transcription.