Get rid of the guitar (3)
I believe the answer is:
axe
I believe this is a double definition.
'get rid of' is the first definition.
(I've seen this before)
'the guitar' is the second definition.
(I've seen this before)
(Other definitions for axe that I've seen before include "saw alternative?" , "Sack with cleaver?" , "Get rid of" , "fell" , "Dispense with" .)