Definitions

1. noun

A miscellaneous or unnamed object, especially one that is difficult to describe or name.

“I don’t know the name of that thingamajig, but I think it’s a doohickey that you use to tighten screws.”

2. noun

An unimportant or obscure device or gadget.

“The company’s new doohickey is supposed to revolutionize the way we communicate.”