A little water I required in relaxation before work (8)
I believe the answer is:
raindrop
'a little water' is the definition.
'i required in relaxation before work' is the wordplay.
'required in' indicates putting letters inside.
'relaxation' becomes 'randr' (I've seen this before).
'before' means one lot of letters go next to another.
'work' becomes 'op' (abbreviation for opus).
'i' going within 'randr' is 'raindr'.
'raindr'+'op'='RAINDROP'
(Other definitions for raindrop that I've seen before include "bit of the wet stuff" , "Pro-drain (anag)" , "Spot of water; a Chopin prelude" , "Rapid Ron (anag.)" , "Bit of precipitation" .)