a glass jar with a wide mouth and an airtight screw top, much used in home canning.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use Mason jar in a sentence
“Intercourse felt, often, like shoving a loofah into a Mason jar,” she writes, for example.Speed Read: Lena Dunham’s Most Shocking Confessions From ‘Not That Kind of Girl’ | Kevin Fallon | September 26, 2014 | THE DAILY BEAST
All you need is pitcher or a jar with a lid—a Mason jar works perfectly—and something to strain out the grounds.
British Dictionary definitions for mason jar
US an airtight glass jar for preserving food
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012