To Be Leaned
To Be Tilted
intransitive verb, godan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means lean, and the verb vocab version means to be leaned or to be tilted. You aren't doing the leaning or the tilting, though, you're just watching, which is why you say "cool" (く) when you see it, because it's already done.
When you need a moon to be leaned, your best option is to cut a moon (かたむ) in half. It's impossible for a full moon to be tilted, but a split moon can lean one way or the other.
その松の木は、少し南の方向へ傾いています。
That pine tree leans a bit toward the south.