Ninepin (7)
I believe the answer is:
skittle
'ninepin' is the definition.
(synonyms)
This is all the clue.
(Other definitions for skittle that I've seen before include "Pin in bowling game" , "A pin for the bowling alley" , "Ninepin" , "Wooden pin set up to be bowled down" , "Pin to be knocked down" .)