Not in contention for two presents (7)
I believe the answer is:
'not in contention' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'two presents' is the wordplay.
'two presents' can mean two replacements for 'present'.
'present' becomes 'now' (both can mean the current period).
'present' becomes 'here' (both can mean in attendance).
'for' is the link.
Can you help me to learn more?
(Other definitions for nowhere that I've seen before include "impossible to locate?" , "Utopia" , "no prospect of success" , "unplaced" , "News from - (William Morris)" .)