Note in own pitch (5)
I believe the answer is:
heave
'pitch' is the definition.
(thesaurus)
'note in own' is the wordplay.
'note' becomes 'e' (musical note).
'in' is an insertion indicator.
'own' becomes 'have' ('have' can be a synonym of 'own').
'e' inserted within 'have' is 'HEAVE'.
(Other definitions for heave that I've seen before include "Big effort" , "Retch - lift using much effort" , "Move with an effort" , "Drag" , "Gasp" .)