환도

Noun

 * 1)  single-bladed curved military sword used during the Joseon dynasty much closer to Japanese wakazaki in appearance in real life

Etymology 2
. Christopher Beckwith proposes a native Korean etymology based on Old Chinese reading of the characters, approximately *warta, which can further be compared to Mongol ᠣᠷᠳᠣ.

Proper noun

 * 1) a fortress in ancient Goguryeo kingdom