Pound or yard, for example (4)
I believe the answer is:
unit
I believe this clue is a double definition.
'pound' is the first definition.
(thesaurus)
'yard for example' is the second definition.
(I know that cubic yard is a UCUM derived unit)
(Other definitions for unit that I've seen before include "Small military detachment" , "Piece of furniture" , "Building block - small military force" , "1 entity" , "Individual thing; one" .)