An informal or slang term for a small gadget, object, or device whose name you can't remember or don't know.
From 'dood-' (perhaps reduplication related to 'do-dad') + '-ab,' an informal suffix. The term emerged in American English in the early 20th century for unnamable objects.
We create placeholder words like 'doodab' and 'whatchamacallit' when we need to talk about something but don't know or can't remember the real name—it's a universal human communication hack!
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