Coach First Eleven? (5)
I believe the answer is:
prime
This could be a double definition.
'coach' is the first definition.
(I've seen this in another clue)
'first eleven?' is the second definition.
The definition and answer can be both quantities as well as being singular nouns.
Maybe there's a link between them I don't understand?
Can you help me to learn more?
(Other definitions for prime that I've seen before include "Main; make ready" , "Prepare to set off" , "Brief" , "Fundamental - of highest quality" , "Foremost" .)