Mason jar
Concise Oxford English Dictionary © 2008 Oxford University Press:
Mason jar/ˈmeɪs(ə)nʤɑː/
▶noun chiefly N. Amer. a wide-mouthed glass jar with an airtight screw top, used for preserving fruit and vegetables.
– origin C19: named after the American inventor John L. Mason.
'Mason jar' also found in these Oxford entries:

