No standalone use in modern Chinese; a classical word for a small portable stove, with a secondary sense of bright. It is the fire radical 火 plus phonetic 圭.
register
Archaic and literary only; encountered in old texts, not in everyday speech.
The fire radical on the left, a pictograph of flames. It supplies the meaning, marking the word as a heat-and-burning object, the same family as 炉 and 灶.
