Rough calculation (8)

I think it could be either:

Which length description are you looking for?:

estimate

'rough calculation' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for estimate that I've seen before include "Gauge - approximation" , "Make an educated guess" , "rough judgment" , "Calculate approximately" , "damage" .)

I've seen this clue in The Telegraph, The Mirror, The Irish Times and The Star Tribune.

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.