thingumabob, UK thingummy, thingamajig [noun] [C] [informal] - a word used, esp. in spoken English, when the name of an object has been forgottenPut those thingamabobs/thingummies down, please, and come over here.See also thingy at thing (PERSON/ANIMAL).
THINGAMABOB
Meaning of THINGAMABOB in English
Cambridge English vocab. Кембриджский английский словарь. 2012