Units of length (6)
'units of length' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for feet that I've seen before include "Unit used to measure" , "Three of these in yard" , "Lower extremities" , "Have both on the ground to be practical" , "Paws" .)
'units of length' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for inches that I've seen before include "small amount" , "Niches (anag.)" , "Scottish islands" , "Moves away; units of measurement" , "Imperial units of length" .)