Mason jar
noun /ˈmeɪsn dʒɑː(r)/
/ˈmeɪsn dʒɑːr/
(North American English)- a glass container with a wide opening and a metal top that screws on tightly, used for preserving fruit and vegetables, especially in the home compare Kilner jarWord Originlate 19th century: named after John L Mason, who invented it in 1858.