___ on the back (3)
I believe the answer is:
pat
(Other definitions for pat that I've seen before include "Tap lightly" , "Small butter piece" , "Affectionate gesture - postman" , "Portion of butter" , "Touch gently; glib" .)
I believe the answer is:
pat
(Other definitions for pat that I've seen before include "Tap lightly" , "Small butter piece" , "Affectionate gesture - postman" , "Portion of butter" , "Touch gently; glib" .)