Crossword Genius

Teacher's cover (3)

Ross

I believe the answer is:

sub

(Other definitions for sub that I've seen before include "Replacement" , "Vehicle in water" , "Beneath on bus" , "Underwater craft" , "Contribution; a boat" .)

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.