Light cutting instrument (5)

I believe the answer is:

laser

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This could be a double definition.

'light cutting' is the first definition.
'laser' can be an answer for 'light' (lasers are a type of light). I am not sure about the 'cutting' bit.

'instrument' is the second definition.
(I have seen 'scientific instrument' mean 'laser' so perhaps 'instrument' could also mean 'laser')

Can you help me to learn more?

(Other definitions for laser that I've seen before include "Device producing an intense light beam - kind of sailing dinghy" , "Scientific apparatus" , "Device producing a narrow, intense beam of light" , "Source of intense beam" , "scientific instrument" .)

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

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