Now leaves out something coiled (6)
I believe the answer is:
spring
'now' 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 don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for spring that I've seen before include "Wellhead or bounce" , "Leap, vault" , "early in the year" , "Vivaldi's work, in order(6;6;6;6)" , "Bound into the season" .)