Crossword Genius

Book of synonyms (9)

Ross

I believe the answer is:

thesaurus

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

(Other definitions for thesaurus that I've seen before include "storehouse" , "Wordbook" , "Volume of synonyms" , "Reference work" , "lists?" .)

I've seen this clue in the Sydney Morning Herald, The Times, The Independent and The Mirror.
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