Freight weights (4)
'freight weights' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pounds that I've seen before include "Money and measures" , "reserves" , "Sterling units of money or weights" , "Enclosures for dogs and cars" , "Imperial units of weight" .)
(Other definitions for tons that I've seen before include "Loads (sl.)" , "A lot" , "Lots" , "Each is equivalent to 2240 pounds" .)