Weed moor (4)
I believe the answer is:
dock
I believe this clue is a double definition.
'weed' is the first definition.
(type of weed)
'moor' is the second definition.
(as in docking or mooring a boat)
(Other definitions for dock that I've seen before include "Court enclosure; plant" , "Cut short; place for defendant" , "Quay" , "Cut short; coarse weed" , "Cut < sort of brief" .)