& 19 Now it's clear ... some cricket! (6)
I believe the answer is:
twenty
'19' is the definition.
The answer and definition can be both quantities as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for twenty that I've seen before include "Number" , "John B Keane wrote about many young men of this age" , "with two crosses" , "No longer a teenager" , "previous clue?" .)