（1） Not clearly explained. An explanation possessing a special meaning. A concealed， but essential meaning （abhipra^ya， sam!dha^ya）. （2） Deep or profound meaning. A point that is hard to grasp. （3） As opposed to the "express teaching" 显教， a situation where the original teaching has been concealed in favor of presenting a easier， or more expedient teaching. （4） The Buddha's meaning 佛意.