Fetching details from the dictionary...

to throw; to fling; to hurl; to toss
to neglect; to abandon; to leave alone; to give up on; to leave undone; to leave unfinished
「放る」 has another reading with different meanings.
彼はボールを遠くに放ってしまった。
He threw the ball far away.
宿題を放っておいたら母に怒られてしまう。
I got scolded for leaving my homework undone.
鞄を放って走り出した。
I tossed my bag and started running.