"The snake is wearing a black hat."
Translation:뱀이 검은 모자를 쓰고 있어.
Do you not have a Korean keyboard? They're pretty easy to install regardless of your device, and it's helpful to learn the keyboard layout.
Naver is awesome because it gives example sentences, Hanja (not sure if you're into that) and has lots of good definitions. I've been thoroughly impressed so far, it works on the web and it's what my wife (Korean) uses to go both directions.
I highly recommend it.
As for Duolingo not having an alternate definition for 쓰다, I agree, it's totally annoying.