A welcome mat may be in front of one (4)

I believe the answer is:

door

(Other definitions for door that I've seen before include "Alternative to knocker" , "Threshold" , "Barrier to open and close" , "Means of exit and entrance" , "Jim Morrison?" .)

I've seen this clue in the USA Today.

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.