thingummy

thingummy
[ˈθɪŋəmi]
(亦作 thingamy)
(pl. -ies)
  1. (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
  1. late 18th cent.: from thing + a meaningless suffix
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