Crossword Genius

First of clues missed out? Puck's hard to find (7)

Ross

I believe the answer is:

elusive

'hard to find' is the definition.
(I've seen this before)

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

(Other definitions for elusive that I've seen before include "Difficult to find or catch" , "Not easy to pin down" , "Slippery, hard to catch" , "Vile Sue, not easy to find" , "Hard to find" .)

I've seen this clue in The Guardian.
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