Bar staff (3)
I believe this clue is a double definition.
'bar' is the first definition.
(both can mean a pole or stick)
'staff?' is the second definition.
(both can mean a stick or cane)
(Other definitions for rod that I've seen before include "Old saying 'Spare the . . . and spoil the child'" , "Former measure equal to a quarter of a chain" , "that most anglers use" , "A stiff stick" , "Bar, shaft" .)
(Other definitions for stave that I've seen before include "System of five horizontal lines in written music" , "Wooden piece of barrel" , "Part of a wooden barrel" , "Bar" , "Stanza of a poem" .)