Gram or gallon (4)
I believe the answer is:
unit
(Other definitions for unit that I've seen before include "Single undivided entity" , "One; military group" , "A single self-contained item" , "Whole - group" , "Single element; one" .)
I believe the answer is:
unit
(Other definitions for unit that I've seen before include "Single undivided entity" , "One; military group" , "A single self-contained item" , "Whole - group" , "Single element; one" .)