Large mass or shape (4)

I believe the answer is:

bulk

(Other definitions for bulk that I've seen before include "Mass (eg for buying)" , "Majority" , "Greater part" , "Great size; main part" , "Size - mass" .)

I've seen this clue in The Times.

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.