jumpers and shirts and tee-shirts

jersey

jer·sey [jersey jerseys]   [ˈdʒɜːzi]    [ˈdʒɜːrzi]  noun

1. countable a shirt worn by sb playing a sports game

2. countable a knitted piece of clothing made of wool or cotton for the upper part of the body, with long sleeves and no buttons; a type of sweater

3. uncountable a type of soft fine knitted cloth used for making clothes

• made from 100% cotton jersey

4. Jersey countable a type of light brown cow that produces high quality milk

5. Jerseythe largest of the Channel Islands, off the north-west coast of France. The main town is St Helier. Jersey has its own government and tax system but has strong links with Britain, and is popular with British tourists. Both English and French are spoken on the island. It is known for its fruit and vegetables (particularly tomatoes and new potatoes called Jersey Royals). The item of clothing called a jersey takes its name from a type of knitted material originally made on the island.

6. Jersey(in the US) another name for the state of New Jersey. 
Word Origin:
late 16th cent. (denoting woollen worsted fabric made in Jersey): from Jersey..  
Example Bank:

• Where can I find replica Iranian soccer jerseys?

shirt

shirt [shirt shirts]   [ʃɜːt]    [ʃɜːrt]  noun

a piece of clothing (usually for men), worn on the upper part of the body, made of light cloth, with sleeves and usually with a collar and buttons down the front
• to wear a shirt and tie
• a short-sleeved shirt
• a football shirt
see also  nightshirt, polo shirt, stuffed shirt, sweatshirt, T-shirt 
Idioms: keep your shirt on ▪ put your shirt on somebody ▪ shirt off somebody's back  
Word Origin:
Old English scyrte, of Germanic origin; related to Old Norse skyrta (compare with skirt), Dutch schort, German Schürze ‘apron’, also to short; probably from a base meaning ‘short garment’.  
Example Bank:
• He tucked his shirt into his pants.
• He wears a crisp white shirt to the office every day.
• a footballer's shirt number

• replica football shirts with Beckham's famous number 7

stuffed shirt

ˌstuffed ˈshirt f22 [stuffed shirt]       noun (informal, disapproving)
a person who is very serious, formal or old-fashioned

• The club members are not just a bunch of stuffed shirts.

sweater

sweat·er [sweater sweaters]   [ˈswetə(r)]    [ˈswetər]  noun
 

a knitted piece of clothing made of wool or cotton for the upper part of the body, with long sleeves. In British English the word is used to describe a piece of clothing with no buttons. In American English a sweater can have buttons and be like a jacket.