Pub serving size (4)
I believe the answer is:
pint
(Other definitions for pint that I've seen before include "small amount" , "The working man's beer measure" , "Unit of capacity" , "Quantity" , "Standard measure of Guinness" .)
I believe the answer is:
pint
(Other definitions for pint that I've seen before include "small amount" , "The working man's beer measure" , "Unit of capacity" , "Quantity" , "Standard measure of Guinness" .)