Rank skirt, but not top (5)
I believe the answer is:
order
'rank' is the definition.
(I know that rank can be written as order)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for order that I've seen before include "Annual film award (5)" , "Instruction - arrangement" , "architectural style" , "Society of monks/nuns" , "Direct - class - instruction" .)