Bashing with a bit of power when stuck in grass (8)

I believe the answer is:

swatting

'bashing' is the definition.

'a bit of power when stuck in grass' is the wordplay.
'a bit of power' becomes 'watt' (I've seen this before).
'when stuck in' means one lot of letters goes inside another.
'grass' becomes 'sing' (I've seen this in other clues).
'watt' placed into 'sing' is 'SWATTING'.

'with' acts as a link.

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.