Pull everything in, it’s greasy (6)
I believe the answer is:
tallow
'it's greasy' is the definition.
I can't judge whether this defines the answer.
'pull everything in' is the wordplay.
'pull' becomes 'tow' (tow is a kind of pull).
'everything' becomes 'all' (I've seen this before).
'in' means one lot of letters goes inside another.
'tow' placed around 'all' is 'TALLOW'.
Can you help me to learn more?
(Other definitions for tallow that I've seen before include "Contributor to soap" , "Animal oil used in making soap and candles" , "Fatty substance used in candles, soap etc" , "Melted, clarified animal fat" , "Rendered fat used for making candles" .)