Vehicle used by Beethoven (3)
I believe the answer is:
van
I believe this is a double definition.
'vehicle' is the first definition.
(van is a kind of vehicle)
'beethoven' is the second definition.
(synonyms)
'used by' acts as a link.
(Other definitions for van that I've seen before include "Transporting vehicle" , "Light vehicle" , "Leading group" , "Front of an advancing army" , "camper?" .)