Very greedy at home, one tucked into food, swallowing it (10)
I believe the answer is:
insatiable
'one tucked into food swallowing it' is the definition.
I can't tell whether this defines the answer.
'very greedy at home' is the wordplay.
'very greedy' becomes 'satiable' (I can't justify this - if you can you should believe this answer much more).
'at' says to put letters next to each other (I've seen this in other clues).
'home' becomes 'in' ('he's home' can mean 'he's in').
'satiable' put after 'in' is 'INSATIABLE'.
Can you help me to learn more?
(Other definitions for insatiable that I've seen before include "Never satisfied" , "that could describe monstrous appetite" , "can't get enough of it" , "Avid" , "Unquenchable" .)