March sample? (4)
I believe the answer is:
demo
This clue is a double definition.
'march' is the first definition.
(as in a demonstration)
'sample?' is the second definition.
(I've seen this in another clue)
(Other definitions for demo that I've seen before include "Show" , "Eg, protest march" , "Public protest meeting" , "presentation" , "March (abbr)" .)