Etymology

From 옥 (玉, ok, “jade”) + 수수 (susu, “sorghum”). First attested in the Yeokhae yuhae (역해유해), 1690, as 옥슈슈 (Yale: woksyusyu).

Pronunciation

• IPA^(key): /o̞ks͈usʰu/
• Phonetic hangeul: 옥쑤수