Meaning & readings

black

On’yomi コク
Kun’yomi くろ、くろ.ずむ、くろ.い

Origin

The character combines two visual ideas to represent "black." The top component originally depicted a frame or enclosed space, while the bottom component 灬 (four dots) represents fire or heat. When something is heated over fire until it becomes charred or darkened, it turns black — this combination of fire with an object shows how black color is created through burning or scorching. Over time, the character became the standard way to write the word for black in Japanese and Chinese.

AI-generated (claude-haiku-4-5), not yet reviewed. Formation type (automated guess): Compound ideographic (combined meanings).

11 strokes

Components

  • meaning part top
  • meaning part bottom

Common words

  • 黒い くろい black
  • 黒鉛 こくえん graphite
  • 黒海 こっかい Black Sea
  • 黒字 くろじ (being in) the black; surplus
  • 黒色 くろいろ black (colour, color)
  • 黒人 こくじん black person
  • 黒星 くろぼし black spot; black dot
  • 黒潮 くろしお Kuroshio Current; Japan Current

Reference

Strokes
11
Kangxi radical
203
Grade
Grade 2 (Kyōiku)
Frequency rank
#573 (newspapers)
Former JLPT
level 3
Unicode
U+09ED2