ica.

Headword: 
ica.
Principal English Translation: 

sometime, on some occasion (see Karttunen)

Orthographic Variants: 
icah, icȃ
IPAspelling: 
ikɑh
Alonso de Molina: 

ica. en algun tiempo, o alguna vez.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 31v. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

ICAH sometime, on some occasion / en algún tiempo o alguna vez (M).
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 92.

Horacio Carochi / English: 

icȃ = sometime

Attestations from sources in English: 

ica (adverb) = sometimes occasionally
Daniel Garrison Brinton, Ancient Nahuatl Poetry: Containing the Nahuatl Text of XXVII Ancient Mexican Poems (1887), 154.