Wag (3)
'wag' is the definition.
(I know that wag can be written as wit)
This is the entire clue.
(Other definitions for wit that I've seen before include "Humour or mental capacity" , "Ingenuity or verbal fun" , "Quickness at clever remarks" , "Nous" , "Funny person" .)
'wag' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for joker that I've seen before include "Card - wag" , "Comedian" , "Comic; a card" , "Buffoon" , "Humorist" .)