[ˈɒstɪəʊl], (Noun)

Definitions:
- (in some small algae and fungi) a small pore through which spores are discharged


Phrases:

Origin:
mid 17th century (in sense ‘small opening or orifice’): from Latin ostiolum, diminutive of ostium ‘opening’. The sense relating to fungi dates from the mid 19th century