Principal English Translation:
will come to do (future tense of the -co suffix of purposive action in plural form)
Rebecca Horn's notes from Nahuatl classes with James Lockhart at UCLA. Card file in the possession of Stephanie Wood.
Attestations from sources in English:
Anquichīhuaquihuî = You'll (pl.) come to do it
Michel Launey, An Introduction to Classical Nahuatl, translated and adapted by Christopher MacKay (Cambridge: Cambridge University Press, 2011), 227.
The singular is -quiuh.
Rebecca Horn's notes from Nahuatl classes with James Lockhart at UCLA. Card file in the possession of Stephanie Wood.