Course is enough for one doing the work of five (6)
I believe the answer is:
series
This clue might be a double definition.
'course' is the first definition.
(I've seen this before)
'one doing the work of five' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'is enough for' acts as a link.
Can you help me to learn more?
(Other definitions for series that I've seen before include "Set of episodes" , "Number of similar things arranged in order" , "Set of linked things" , "procession" , "Group of related radio/TV programmes" .)