thingummy
/ˈθɪŋəmɪ; `θɪŋəmɪ/ (also thingumajig / ˈθɪŋəmədʒɪg; `θɪŋəməˌdʒɪɡ/, thingumabob / ˈθɪŋəməbɔb;`θɪŋəməˌbɑb/, thingy / ˈθɪŋɪ; `θɪŋɪ/ ) n (infml 口) personor thing whose name one does not know or has forgottenor does not wish to mention 某人, 某物（其名不详或已忘记或不愿提及）.