One knocked down in an alley? (7)
I believe the answer is:
skittle
'alley?' is the definition.
(synonyms)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for skittle that I've seen before include "Pin in bowling game" , "One of ninepins" , "Pin in ninepins" , "Wooden pin set up to be bowled down" , "Ninepin" .)