PTS Pali-English dictionary - The Pali Text Society's Pali-English dictionary
Yāyin
Yāyin,(adj.) (-°) [fr.yā,see yāti] going,going on to; in yāna-yāyinī (f.) Th.2,389 (maggaṭṭhaṅgika° having ascended the carriage of the 8--fold Path; expld by “ariya-yāyena nibbāna-puraṁ yāyinī upagatā” ThA.257).(Page 554)