Crossword Genius

Crucial (3)

Ross

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crucial</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for key that I've seen before include "Essential; solution" , "Device for lock" , "Lock undoer" , "Lock opener; low island" , "Coral reef off southern coast of Florida" .)

I've seen this clue in The Telegraph, The Mirror, the Newsday, the King Feature Syndicate, the USA Today, the Universal and the Penny Press.
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