From Wiktionary, the free dictionary
From olú (“mushroom”) + won̄gaga.
olúwon̄gaga
- The fungi Coprinellus ephemerus, it is regarded as being poisonous and grows on dunghills
- Olúwon̄gaga ni oríṣi olú kan tí ó máa ń hù lórí ààtàn tí ó sì máa ń kú ní ọjọ́ kan náà ― The fungus Coprinellus ephemerus is a type of mushroom that grows on dunghills and is said to die that same day