Crossword Genius

First person Gregory takes to heart (3)

Ross

I believe the answer is:

ego

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

'to heart' is the definition.
(thesaurus)

'first person gregory' is the wordplay.
'EGO' is hidden within the letters.
However, I am not sure how this is indicated.

'takes' is the link.

Can you help me to learn more?

(Other definitions for ego that I've seen before include "Sense of self, conceit" , "number one" , "Self-confidence" , "(Self-assertive) personality" , "One's sense of self-importance" .)

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