Could she give you a hot time? (4)
I believe the answer is:
june
'time?' is the definition.
The definition and answer can be both related to time as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for june that I've seen before include "Sixth month" , "Spring/summer month" , "some time" , "Month after 14" , "Month named after Jupiter's wife" .)