You can walk the dog with these biscuits (2-3)
I believe the answer is:
yo-yos
'biscuits' is the definition.
Although both the answer and definition are plural nouns, I can't see how one could define the other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for yo-yos that I've seen before include "Toys with spool and reel" , "Playthings with spool and reel" , "Children's toys" , "Toys with pair of joined discs and string" , "1930s spinning toys" .)