Give the call sign (6)

I believe the answer is:

beckon

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

'call sign' is the definition.
'beckon' can be an answer for 'call' (I've seen this in another clue). I am not sure about the 'sign' bit.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for beckon that I've seen before include "Summon by gesturing" , "Summon with finger gesture" , "Summon with a wave" , "Gesture closer" , "Summon with raised finger" .)

I've seen this clue in The Globe and Mail and 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.