Played by children at a loose end? (3)
I believe the answer is:
tag
This clue might be a double definition.
'played by children at' is the first definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'a loose end?' is the second definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe you can see an association between them that I can't see?
Can you help me to learn more?
(Other definitions for tag that I've seen before include "Children's chasing game" , "Label or sticker" , "Small label" , "Label (to attach)" , "stock quotation" .)