Cherry variety (4)
'cherry variety' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bing that I've seen before include "Sobriquet of Harry Lillis Crosby" , "The Old Groaner" , "Daddy of the crooners . . . . Crosby" , "-- Crosby, singer" .)
(Other definitions for broaching that I've seen before include "Starting to speak" , "Opening" .)