Crossword Genius

Muscle used in a pull-up, informally (3)

Ross

I believe the answer is:

tri

(Other definitions for tri that I've seen before include "Prefix indicating three" , "Prefix meaning three" , "Three-point" , "Denotes three" , "Prefix denoting three" .)

I've seen this clue in The New York 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.