This is the 8615th most frequent Japanese word.
放り込ん
"放り込ん" means "to throw in" or "to toss into."
Here, '放り込ん' is instructing the action of disposing of an item by throwing it into a waste receptacle, implying an effortless motion.
ゴミをゴミ箱に放り込んでください。
Please throw the garbage into the trash can.
The word '放り込ん' is used here to express the action of quickly or carelessly throwing or inserting something into a container.
彼は服をトランクに放り込んだ。
He threw the clothes into the trunk.
In this sentence, '放り込ん' emphasizes the casual or possibly hurried act of placing something inside an enclosed space.