Jacket

[1] A jacket typically has sleeves and fastens in the front or slightly on the side.

A jacket is generally lighter, tighter-fitting, and less insulating than a coat, but both are outerwear.

The term comes from the Middle French noun jaquet, which refers to a small or lightweight tunic.

Speakers of American English sometimes informally use the words jacket and coat interchangeably.

[3] The word is cognate with Spanish jaco and Italian giacca or giacchetta, first recorded around 1350s.