Very bad line-up (4)
I believe the answer is:
rank
This might be a double definition.
'very bad' is the first definition.
(I've seen this before)
'line-up' is the second definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
Can you help me to learn more?
(Other definitions for rank that I've seen before include "Social standing; foul-smelling" , "Utter" , "Classify" , "degree" , "A tax stand" .)