Remove a narrow piece (5)
I believe the answer is:
strip
I believe this is a double definition.
'remove' is the first definition.
(stripping is a kind of removing)
'a narrow piece' is the second definition.
(as in a strip of material or land)
(Other definitions for strip that I've seen before include "Kind of lighting" , "Team kit" , "Tear off" , "Denude; long narrow piece of fabric" , "Undress (provocatively)" .)