àṣẹ̀ṣẹ́ noun /à.ʃɛ̀.ʃɛ́/
ìsẹ̀sẹ̀ (alternative)
Definitions
  1. any of the various species of mushroom
Etymology
Compare with Proto-Yoruba language Olukumi ìsẹ̀sẹ, suggesting either a common borrowing from another language or perhaps derived from a Proto-Edekiri term.
Source: Wiktionary, where this word is spelled “aṣẹṣẹ”. Reference: en-aṣẹṣẹ-yo-noun-WMdiBCcG