Traces out sugar (6)
I believe the answer is:
caster
'sugar' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'traces out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'traces' with letters rearranged gives 'CASTER'.
Can you help me to learn more?
(Other definitions for caster that I've seen before include "Small swivelling wheel on furniture" , "Founder; type of 12 Ac" , "Crates with kind of fine sugar" , "Swivelling wheel (E, not O)" , "One who throws something" .)