窗扇上冒头
/ˈtɒp ˈɹeɪl ɒv ˈsaʃ/
n
English: top rail of sash · 窗扇上冒头
English · top rail of sashEspañol · travesaño superior de la vidrieraFrançais · traverse supérieure d’ouvrant
释义：Level piece of wood at the top of the movable part of the window.