Presumably of native Korean origin.
웅굴 • (unggul)
- (Gangwon, Gyeongsang, Hamgyong, Yukjin) well
2012 February 13, 배철주 [baecheolju], “땅을 못 가져가는 도깨비 [ttang'eul mot gajeoganeun dokkaebi]”, in 한국구비문학대계 [han'gukgubimunhakdaegye][1], 강원도 동해시 삼화동 [gang'wondo donghaesi samhwadong]:석벽으로 돌아가다보이 뭔 웅굴이 있고 그 죽순 대나무 삼대낭기 있어.- Seokbyeog-euro doragadaboi mwon unggur-i it-go geu juksun daenamu samdaenanggi isseo.
- Returning to the stone wall, [the old lady found that] there was a well and three bamboo shoots.