The term 'Scots' Hats' refers to the traditional headwear of Scotland, also known as a tam o'shanter. The word 'TAMS' is an abbreviation of the phrase 'tam o'shanter, ' which is a type of hat that is traditionally worn by Scotsmen. It is usually made of wool and has a flat top with a pom-pom on the end. The hat is often associated with Scottish culture and is a popular choice for traditional dress.