Device and Whatsit

Device noun - A clever often underhanded means to achieve an end.

Whatsit and device are semantically related. in instrument topic. In some cases you can use "Whatsit" instead a noun "Device".

Whatsit noun - A small article the actual name of which one either does not know or cannot remember.

Device and whatsit are semantically related. Sometimes you can use "Device" instead a noun "Whatsit".