A young unopened mushroom.
More example sentences
- The cap is yellow or amber and shaped like that of a cultivated button mushroom.
- Not that there's anything wrong with the basic button mushroom.
- Anastagio picked up a button mushroom and threw it at his son, hitting him on the nose, smiling even as he did it despite the fact that the gesture was a warning.
Definition of button mushroom in:
- The British & World English dictionary