Host feeding cat for example (6)
I believe the answer is:
legion
'host' is the definition.
(I know that host can be written as legion)
'feeding cat for example' is the wordplay.
'feeding' is an insertion indicator (one word is fed by another set of letters).
'cat' becomes 'lion' (lion is a kind of cat).
'for example' becomes 'e.g.' (short for 'exempli gratia', 'for example' in Latin).
'lion' enclosing 'eg' is 'LEGION'.
(Other definitions for legion that I've seen before include "Roman battalion" , "Roman army grouping" , "Host" , "Division of ancient Roman army" , "Many soldiers" .)