Etymology: Derived from East Asian languages: in Korean, 'Cho' (초) can mean 'grass' or 'herb', but as a given name it's often short for names like Chohyun or based on Sino-Korean characters such as 趙 (a surname) or 曹. In Japanese, it may derive from 'chou' (蝶) meaning 'butterfly', often written as ちょう in hiragana.