Save Gender Masculine Usage Korean Scripts 동우(Korean Hangul) Pronounced Pron. /to̞ŋ.u/ [key·simplify] Other Forms FormsDong-woo, Dongwoo Meaning & History From Sino-Korean 東 (dong) meaning "east" or 桐 (dong), referring to the paulownia coreana tree, and 雨 (u) meaning "rain," 佑 (u) meaning "help, assist" or 宇 (u) meaning "house," among other hanja combinations.