From Longman Dictionary of Contemporary Englishldoce_176_cjugjug /dʒʌɡ/ ●●○ noun [countable] 1 
British EnglishDFU a container with a wide curved opening at the top and a handle, used especially at meals for pouring liquids SYN pitcher American English a milk jug2 American English a deep round container with a very narrow opening at the top and a handle, used for holding liquids SYN pitcher British English3 (also jugful /ˈdʒʌɡfʊl/)TM the amount of liquid that a jug will holdjug of a jug of water4 → jugs
British EnglishDFU a container with a wide curved opening at the top and a handle, used especially at meals for pouring liquids SYN pitcher American English a milk jug2 American English a deep round container with a very narrow opening at the top and a handle, used for holding liquids SYN pitcher British English3 (also jugful /ˈdʒʌɡfʊl/)TM the amount of liquid that a jug will holdjug of a jug of water4 → jugsExamples from the Corpus
jug• a two-gallon jug of wineOrigin jug (1400-1500) Perhaps from the female name Jug, given to ugly women, from Joan 