Thingamajig's origination is unknown but maybe the most well known place would be sim city 2000 where one of the industrial buildings where named "Thingamajig". Thingamajig describes something you have no idea how to describe.
by D00M March 15, 2005
When you are trying to say somthing but you forgot the word/thing. (helps if you point at the thing)
by Robojoe March 16, 2016
When the correct name of whatever you're speaking about is forgotten magically and you end up spouting this gibberish word
Not very smart guy: hey you know those, uhhh, beep boop typey thingamajigs in the computer room
Smart guy: the COMPUTERS?
Not very smart guy: uhh, yeah those
Smart guy: the COMPUTERS?
Not very smart guy: uhh, yeah those
by Sir Beans of Heinzington March 25, 2023
Whatever the fuck that is.
by onbkiller December 05, 2024
by M.E. ~a person who paints September 14, 2020
by Word999 October 11, 2019