Crossword Genius

Willingly die? (7)

Ross

I believe the answer is:

testate

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'willingly die?' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

This is all the clue.

Can you help me to learn more?

(Other definitions for testate that I've seen before include "Having made a legal will" , "Having written a valid will" , "Dying with a will" , "Having made a will before death" , "State of having made a will" .)

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