gǔ
exegesis, explanation; explain
to comment; to explain
Pictophonetic: semantic 讠 (speech), phonetic 古
Made of 讠 + 古
故顾古姑股骨孤雇谷估鼓固辜咕菇蛊呱沽锢箍瞽梏毂钴汩鸪