Hold back remaining drops (8)

I believe the answer is:

restrain

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'hold back' is the definition.
(synonyms)

'remaining drops' is the wordplay.
'remaining' becomes 'rest' (I am not sure about this - if you are sure you should believe this answer much more).
'drops' becomes 'rain' (drops of water).
'rest'+'rain'='RESTRAIN'

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(Other definitions for restrain that I've seen before include "Hold back, tether" , "In arrest (anagram)" , "Prevent (from excess)" , "bottle up" , "Keep under control" .)

I've seen this clue in The Telegraph.

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