Grass at home - good to be stepping on it (7)
I believe the answer is:
rushing
'be stepping on it' is the definition.
I can't tell whether this definition defines the answer.
'grass at home good' is the wordplay.
'grass' becomes 'rush' (I've seen this before).
'at' says to put letters next to each other.
'home good' becomes 'ing' (I can't explain this - if you can you should give a lot more credence to this answer).
'rush'+'ing'='RUSHING'
'to' is the link.
Can you help me to learn more?
(Other definitions for rushing that I've seen before include "Hurrying" , "In great hurry" , "Moving quickly" , "Moving hurriedly, perhaps carelessly" .)