关键字 Traditional form: 關鍵字 Pinyin (reading): guānjiànzì Definitions: keyword Characters: 关 - frontier pass; to close, to shut; relation 键 - lock, door bolt; key 字 - character, letter, symbol, word Traditional characters: 關 - frontier pass; to close, to shut; relation 鍵 - lock, door bolt; key 字 - character, letter, symbol, word