Crossword Genius

Mouth organ? (6)

Ross

I think it could be either:

Which length description are you looking for?:

6

9

I believe this is a double definition.

'mouth' is the first definition.
(thesaurus)

'organ?' is the second definition.
(tongue is a kind of organ)

(Other definitions for tongue that I've seen before include "Go tune up what's in the mouth" , "Organ of taste" , "Speech" , "Flap under shoelaces" , "manner of speaking" .)

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