Tam o'Shanters is a type of Scottish woolen cap that is typically worn by men. It is characterised by its unique style, which features a pompom or tassel at the top, and has a flat base that sits on the head. Although it is a unique piece of headwear, there are several synonyms that can be used in place of Tam o'Shanters for those who prefer to diversify their vocabulary. These include Scottish Bonnets, Balmoral Bonnets, Glengarry Caps, Kilmarnock Caps, Castor Hats, Tweed Caps, and Tartan Caps, to name a few. These terms are commonly used interchangeably, depending on the region and cultural context.