Hide in a tree (4)
I believe the answer is:
palm
This clue might be a double definition.
'hide in' is the first definition.
The answer and definition can be both quantities as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'a tree' is the second definition.
(palm is a kind of tree)
Can you help me to learn more?
(Other definitions for palm that I've seen before include "Leaf in part of the hand?" , "Tropical tree with large leaves" , "Obscure" , "Coconut-bearing tree" , "Symbol of victory" .)