Interested in taking good shots? You may want to get this dolly (4,5)
I believe the answer is:
aunt sally
'interested in taking good shots? you may want to get this dolly' is the definition.
The definition suggests a singular noun which matches the answer.
This is all the clue.
Can you help me to learn more?
(Other definitions for aunt sally that I've seen before include "laughing stock" , "fair game" , "Family member" , "She's a target in throwing games, like female relative" , "Target of general criticism, as in throwing game" .)