Two short of a complete score (8)
I believe the answer is:
eighteen
This clue might be a double definition.
'two short' is the first definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?
'a complete score' is the second definition.
The answer and definition can be both quantities as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'of' is the link.
Can you help me to learn more?
(Other definitions for eighteen that I've seen before include "Twice 22 across" , "The genie (anag.)" , "Number of on-field players in an Australian Rules football team" , "when boy becomes man?" , "2x9" .)