Answer:
What gets sharper the more you use it?
I'm an old relative who's hand's can't hold anything and eyes canโt see anything
I am natureโs way of applauding lightning.
Iโm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk