Stand in line, as Elvis (5)

I believe the answer is:

easel

I'm a little stuck... Click here to teach me more about this clue!

'stand' is the definition.
(stand for an artist's canvas)

I cannot understand how the remainder of the clue works.

(Other definitions for easel that I've seen before include "Framework to hold a canvas" , "Picture support" , "Blackboard supporter" , "Painter's support" , "artistic aid" .)

I've seen this clue in The Telegraph.

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.