Enclosed area of a few feet (4)
I believe the answer is:
yard
I believe this clue is a double definition.
'enclosed area' is the first definition.
(I've seen this before)
'a few feet' is the second definition.
(I've seen this before)
'of' is the link.
(Other definitions for yard that I've seen before include "Imperial unit of length" , "area behind the house" , "Thirty six inches" , "compound" , "Dray (anag.)" .)