表    姐    [a daughter of father's sister or of mother's brother or sister,who is older than oneself;cousin]姑母、舅父或姨母的女儿中比自己年长者

表姐即为比自己年长的女性必须是姑母、舅父或姨母的女儿。

Elder female cousin

表里山河    表里相符    表里一致    表里相济    表里为奸