Crossword Genius

"Happy Birthday" writer, sometimes (4)

Ross

I believe the answer is:

icer

(Other definitions for icer that I've seen before include "One adding decoration, perhaps" , "Cake decorator" .)

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.