An element of tininess (3)
I believe the answer is:
tin
This clue could be a double definition.
'an element' is the first definition.
(tin is a kind of element)
'tininess' is the second definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
'of' acts as a link.
Can you help me to learn more?
(Other definitions for tin that I've seen before include "Earnings" , "Ready" , "Silvery-white metal used in cans" , "Kind of metal often used as food container" , "With copper, makes bronze" .)