The downy spherical seed head of a dandelion.
More example sentences
- Its head looks like a dandelion clock, from which flows a long tail which broadens and splits about a degree or so along its length.
- Who too has not, as a child, picked a dandelion clock and blown away the seeds while making a wish?
- His hair is grey and frothy, like a dandelion clock, but he carries his turbulent past and 66 years lightly.
from the child's game of blowing away the seeds to find out what time it is.