木+9 = 13

椳ㄨㄟwēi

ㄨㄟwēi
  1. 〈書〉承接門軸的凹槽。
    例「欂櫨侏儒，椳闑扂楔（唐‧韓愈〈進學解〉）​」。
英the pivots, at the top and bottom of a Chinese door, on which the door turns