black belt

== English == === Etymology 1 === Calque of Japanese 黒帯 (kuroobi) ==== Noun ==== black belt (plural black belts) (martial arts) The highest belt colour in various martial arts. Synonym: dan (martial arts) Someone who has attained the black belt in martial arts. Synonym: dan (figurative, colloquial) Great skill in any field. (management) A senior manager who is expert in one of various management systems such as Six Sigma or DMAIC and acts in a project leader or mentor role. ===== Coordinate terms ===== green belt, white belt ===== Translations ===== === Etymology 2 === From black +‎ belt, originally named after the dark soil. ==== Noun ==== black belt (plural black belts) (US, southern) A geographic region where the residents are predominantly or exclusively African-American. (geology) A roughly crescent-shaped geological formation of dark fertile soil in the Southern United States. ===== Alternative forms ===== Black Belt ===== Coordinate terms ===== (region of United States): Bible Belt, Rust Belt, white belt ===== Related terms ===== (dark fertile soil): black earth