Killer whale (4)

I think it could be either:

Which length description are you looking for?:

grampus

'killer whale' is the definition.
(synonyms)

This is the entire clue.

(Other definitions for grampus that I've seen before include "Good synchronised swimmer" , "huge creature" , "Popular name for a killer whale" , "danger in the main" , "Dolphin - killer whale" .)

I've seen this clue in the Sydney Morning Herald.

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.