Crossword Genius

Toy lightsaber Ewoks gave Obi-Wan initially (4)

Ross

I believe the answer is:

lego

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

'toy' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for lego that I've seen before include "Children's building bricks" , "Toy building bricks" , "Child's plastic construction set" , "Building block toy" , "Child's building bricks" .)

I've seen this clue in The Guardian.
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