Adler reports essentially the same entry (minus 'of a root') in the Ambrosian Lexicon; the corresponding entry in ps.-Zonaras has the gloss fa/rmakon tou= *pai/wnos; and Galen has the phrase ti paiw/neion fa/rmakon.
See also pi 883, where the headword occurs with a variant spelling also used (Adler reports) in ms G here.