Crossword Genius

Would the light be a trick? (6)

Ross

I believe the answer is:

beacon

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

'would the light' is the definition.
I can't judge whether this definition defines the answer.

'be a trick?' is the wordplay.
'trick?' becomes 'con' (a con is a fraud or trick).
'be'+'a'+'con'='BEACON'

Can you help me to learn more?

(Other definitions for beacon that I've seen before include "Guiding light?" , "Signal fire - transmitter" , "Warning light on a high point" , "Shining light (on top of a hill?)" , "Raised signal fire or light" .)

I've seen this clue in the Evening Standard.
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