to hide all that you have from others (see Molina)
IPAspelling:
semiɑːniliɑ
Alonso de Molina:
cemianilia. nic. (pret. oniccemianili.) esconder le a otro todo quanto tiene. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 16r. col. 1. Thanks to Joe Campbell for providing the transcription.