Converse of object

• cover: One million bacteria, clumped together, would cover a pinhead.

Adjective modifier

• tiny: They'll be tiny white pinheads to start with.

• little: Some have the stigma, to which the pollen adheres during pollination, like a little pinhead protruding from the flower.

Modifies a noun

• oatmeal: Nowadays, each cheese is rolled in toasted pinhead oatmeal.

• spot: It was about 5 cms long, sky blue with white pinhead spots on the top.

• size: The eggs are pinhead size, while adult lice are about the size of a sesame seed.