(informal)used to refer to or address a person or thing whose name one has forgotten, does not know, or does not wish to mention (非正式)[用指不知其名,忘记其名,不愿称呼其名的人、事物]某某,那个人;那东西 one of those thingummies for keeping all the fire tools together. 那些用于把所有消防工具集拢起来的东西之一。
语源
late 18th cent.: from thing + a meaningless suffix