Kitchen strainer (8)
I believe the answer is:
colander
'kitchen strainer' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for colander that I've seen before include "This drains" , "Container for straining water from food" , "Perforated vessel" , "One strains" , "Boiled 20 Down may be strained through this" .)