An article of clothing worn on the upper torso sometimes over a shirt. The good 'uns are made of virgin wool and come from places like Scotland. Though how Scots ascertain that the wool is virgin remains a trade secret.

What Americans call a sweater is called a jumper in the U.K..

Sweat"er (?), n.

1.

One who sweats.

2.

One who, or that which, causes to sweat; as:

1. A sudorific.
2. A woolen jacket or jersey worn by athletes.
3. An employer who oppresses his workmen by paying low wages. [Slang] <-- jersey worn by lots of people, not just athletes. Needs expansion. -->

© Webster 1913.