Pen where pig is kept with mostly extravagant appetite (6)
I believe the answer is:
stylus
'pen' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'where pig is kept with mostly extravagant appetite' is the wordplay.
'where pig is kept' becomes 'sty' (as in a pig sty).
'with' means one lot of letters go next to another.
'mostly' means to remove the last letter (most but not all of the word).
'extravagant appetite' becomes 'lust'.
'lust' with its last letter taken away is 'lus'.
'sty'+'lus'='STYLUS'
Can you help me to learn more?
(Other definitions for stylus that I've seen before include "Old writing implement" , "LP tracking point" , "LP record pick-up" , "One going on record" , "LP tracker" .)