Denim.
"She decided to swap her dress for a pair of blue jeans to stay comfortable during the long hike."
In plain English: A jean is a pair of pants made from sturdy blue cotton fabric.
"She folded her denim jean and placed it at the back of the closet."
Usage: Use "jean" only when referring to a specific person's name or a unit of measurement; do not use it to mean denim fabric or pants. The common word for denim trousers is "jeans," while the material itself is "denim."
A female given name from Hebrew.
"After years of being called Jean, she finally decided to go by her full first name, Jennifer."
The word jean comes from the Old French Jannes via Middle English, originally referring to a blue dye made in the Italian city of Genoa that was used to tint cloth produced in Nîmes. Over time, the name shifted from describing the specific color and origin of the fabric to simply naming the durable denim material itself.