Jo's trademark? (5)
I believe the answer is:
brand
This could be a double definition.
'jo's' is the first definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?
'trademark?' is the second definition.
(I've seen this in another clue)
Can you help me to learn more?
(Other definitions for brand that I've seen before include "Name given to a product or service" , "Type of product - identifying mark on livestock" , "Label" , "Stamp" , "Trademark - burning piece of wood" .)