jänkä

Etymology 1
From a language, ultimately from  (compare 🇨🇬).

Noun

 * 1)  type of swamp; free of, or sparsely covered by trees, especially in northern Finland

Etymology 2
Possibly.

Noun

 * 1)  wedge
 * 2)  A large, longish chunk of any material such as stone, ice or even cloud.