the second son or daughter (see Molina); the middle child
This is also a common name in Morelos.
Auh ca iz tica in titeach in tiacapãtli, auh ca iz tõca in titlacoieoa, auh in titlatoqujlia; auh iz tica ompa tica on in tixocoiutl = And here standest thou who art the oldest, the firstborn; and here art thou who art the second; and thou who followest; and thou who standest, who standest there, thou who art the youngest (central Mexico, sixteenth century)
in cioatzintli, in at amotlacoieoauh, in at amotiacapan, in at noҫo amoxocoiouh = the little woman who is perhaps your second child, perhaps your eldest, or perhaps your youngest (central Mexico, sixteenth century)