Note some housing minister in Bude on vacation (9)
I believe the answer is:
semibreve
'note' is the definition.
(musical note)
'some housing minister in bude on vacation' is the wordplay.
'some housing' becomes 'semi' (I can't justify this - if you can you should believe this answer much more).
'minister' becomes 'rev' (short for reverend).
'in' indicates putting letters inside.
'on vacation' means to remove the middle letters.
'bude' with its middle removed is 'be'.
'rev' going inside 'be' is 'breve'.
'semi'+'breve'='SEMIBREVE'
Can you help me to learn more?
(Other definitions for semibreve that I've seen before include "Note equal to two minims" , "Note equivalent to four crotchets" , "2 minims/4 crotchets" .)