noun
A type of edible fern, Matteuccia struthiopteris, commonly foraged in Japan as a spring wild vegetable (sansai).
See also: くさそてつ
春になると、山でこごみを採るのが楽しみです。
In spring, I look forward to picking ostrich ferns in the mountains.
こごみは天ぷらにすると美味しい。
Ostrich fern is delicious when made into tempura.
The name こごみ likely derives from the way the young fronds curl up (屈む, こごむ), but the exact origin is uncertain.