Forest, Woods
This kanji is just the tree radical three times. Just based off this, you should be able to figure it out. This kanji means "forest."
Makes sense, because a bunch of individual trees is what makes up a forest!
しん
もり
None
One tree? No. Two trees? Not enough. I want more (もり) trees, please!
Keep repeating this pattern over and over, continually focusing in on how you need "more" trees to make this forest. For some reason the person working with you only goes up by one at a time, though, so you have to say it a lot (it'll help you to remember, anyways!).