There may be a few (5)
I believe the answer is:
three
'a few' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'there may be' is the wordplay.
'may be' indicates an anagram.
'there' with letters rearranged gives 'THREE'.
Can you help me to learn more?
(Other definitions for three that I've seen before include "Figure" , "Start to count back, briefly" , "... number of his "Steps to Heaven"" , "Sixth root of seven hundred and twenty nine" , "Amount in a trio" .)