Instrument there's call for (5)
I believe the answer is:
bugle
This could be a double definition.
'instrument' is the first definition.
(bugle is a kind of instrument)
'call for' is the second definition.
'bugle' can be an answer for 'call' (thesaurus). I am not certain of the 'for' bit.
'there's' acts as a link.
Can you help me to learn more?
(Other definitions for bugle that I've seen before include "An army trumpet" , "Military musical instrument" , "Does it call" , "It calls to soldiers" , "Creeping plant with blue flowers" .)