"No ___" (airplane wing warning) (4)

I believe the answer is:

step

(Other definitions for step that I've seen before include "Gradation" , "Stride" , "Prefix meaning related by remarriage" , "Section of flight" , "Rung, dance movement" .)

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.