Thingamajig (6)

I think it could be either:

Which length description are you looking for?:

whatchamacallit

'thingamajig' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for whatchamacallit that I've seen before include "unknown label?" , "unmemorable thing" , "whatever it is" .)

I've seen this clue in the Universal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.