Dog with a stick (7)
I believe the answer is:
pointer
I believe this is a double definition.
'dog' is the first definition.
(pointer is a kind of dog)
'stick' is the second definition.
(thesaurus)
'with a' is the link.
(Other definitions for pointer that I've seen before include "Sign" , "helpful tip!" , "something moved by mouse" , "Hint (for a dog?)" , "Gun dog" .)