First person plural, future middle, of e)piboa/w. As Adler notes, it must be quoted from Homer, Iliad 10.463 (where it would be e)pibwso/meq'); note however that some editions print the Aristarchan variant e)pidwso/meq').
For this verb, see also epsilon 2245, epsilon 2246, epsilon 2247, epsilon 2248.