You have a table.
You can hit hard on your table.
So rain lashes on the window should be correct.
My question is what is wrong with 'lash on' in this context.
Rain is lashing.
Is the above correct?
Thanks for all the interesting replies.
I DIDN'T know THOSE things.
If I want I can hit on one of my windows carefully.
If I hit hard on one of my windows, the glass will be damaged. So I have to hit it lightly.
Can't I say I can hit on one of my window panes?
How did you arrive at that conclusion? Here's 'lashing' used as an adjective:
'We were soon drenched by the lashing rain.'