ἴτον

Etymology
Furnée connects the word with, which has variants too. Furnée is mistaken to assume a prothetic "ὀ-", since "ὀ-" and "οὐ-" just indicate "ϝ-". So we have *wit- and *wid-n-, with a suffix beginning with "n-" and voicing before the nasal, which is typical of according to Beekes.

Noun

 * 1) Thracian name for a kind of mushroom