thingamabob
noun [ C ] informal uk/ˈθɪŋ.ə.mə.bɒb/ us/ˈθɪŋ.ə.mə.bɑːb/ (also thingamajig, /ˈθɪŋ.ə.mə.dʒɪɡ/ /ˈθɪŋ.ə.mə.dʒɪɡ/); (UK also thingummy, /ˈθɪŋ.ə.mi/ /ˈθɪŋ.ə.mi/)
那东西（指忘记其名的事物）
a word used, especially in spoken English, when the name of an object has been forgotten
I need one of those red thingamabobs for this - Do you have one? 要做这个我需要一个红色的那种东西——你有吗？
Synonyms: doohickey thingy whatchamacallit