Shirt
A shirt is a kind of cloth which is made to cover the upper body. In North America, shirts can mean T-shirts, polo shirts, etc. In Britain, a shirt has a collar, sleeves with cuffs and split in half with buttons on one side. (North Americans would call this a "dress shirt", a specific type of "collared shirt"). Some shirts have sleeves, that cover the arms. T-shirts are a type of shirt that has shorter sleeves. These sleeves cover the shoulders. Shirts that do not have sleeves are called "sleeveless".
Shirt Media
Charvet shirt from the 1930s, Norsk Folkemuseum, Oslo, Norway