U+78AB "碫" CJK Unified Ideograph-# Unicode Character

U+78AB "碫" CJK Unified Ideograph-# is a Chinese character (hanzi) that primarily means a whetstone or a stone for sharpening tools, and it can also imply forging or grinding metal. This character is composed of the radical "石" (stone) on the left, indicating its association with stone or rock, and the phonetic component "段" (duàn) on the right, which contributes to its pronunciation. Found in classical and modern Chinese texts, "碫" is used in contexts related to metalworking and tool maintenance, though it is less common in everyday language compared to more frequently used synonyms like "磨" (to grind).