黒くろ帯おびくろおびMeanings1nounblack beltmartial artsIn martial arts, the belt itself and the rank it represents. Also used metaphorically for a high level of skill.彼かれは柔じゅう道どうの黒くろ帯おびを持もっている。He holds a black belt in judo.黒くろ帯おびを締しめるには何なん年ねんもかかる。It takes many years to earn a black belt.