Crossword Genius

One's told to heighten beams (4)

Ross

I believe the answer is:

rays

'beams' is the definition.
(rays of light)

'one's told to heighten' is the wordplay.
'one's told' indicates a 'sounds like' (homophone) clue.
'to heighten' becomes 'raise' (synonyms).
'raise' is a homophone of 'RAYS'.

(Other definitions for rays that I've seen before include "Straight lines extending from a point" , "Flat fish" , "Sunbeams" , "Beams from sun or moon" , "Beams - fish" .)

I've seen this clue in The Times.
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