New errand takes one next to the sink (7)
I believe the answer is:
drainer
'next to the sink' is the definition.
I can't judge whether this definition defines the answer.
'new errand takes one' is the wordplay.
'new' indicates anagramming the letters.
'takes' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'errand' anagrammed gives 'draner'.
'draner' enclosing 'i' is 'DRAINER'.
Can you help me to learn more?
(Other definitions for drainer that I've seen before include "Where crockery dries" , "one drying out?" , "Crockery drying rack" , "Rack for wet crockery" , "it will be next to sink" .)