Stick in a schoolbag (5)

I believe the answer is:

ruler

(Other definitions for ruler that I've seen before include "Monarch - straightedge" , "person holding sway?" , "' - - of the Queen's Navee!'" , "Straight edge; monarch" , "Potentate" .)

I've seen this clue in The Wall Street Journal.

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.