Solution (6)

I think it could be either:

answer

saline

'solution' is the definition.
(synonyms)

This is all the clue.

(Other definitions for answer that I've seen before include "Be satisfactory" , "Serve" , "'Daisy, Daisy, give me your ...... do'" , "It could give you a" , "Respond" .)

I've seen this clue in the Penny Press, the LA Times, The Daily Mail, the King Feature Syndicate, The Guardian, The Telegraph, the USA Today, the Evening Standard, the Canadiana, the Universal and The Sun.

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