Ray to act camp in striptease? (4)

I believe the answer is:

beam

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'ray' is the definition.
(I know that ray can be written as beam)

I can't explain the remainder of the clue.

(Other definitions for beam that I've seen before include "Piece of timber - shaft of light" , "Smile; wooden supporter?" , "Ray of light or a large smile" , "Give a wide smile" , "Gymnast's bar; broad smile" .)

I've seen this clue in the Sydney Morning Herald.

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