The term 'Highlands Headgear' refers to traditional hats worn in the Scottish Highlands. The two crossword solutions for this term are TAM (3 letters) and TAMS (4 letters). TAM is an abbreviation for the traditional Scottish hat known as a TAM o' Shanter, which is a flat cap with a pom-pom on top. TAMS is an abbreviation for the plural form of the same hat, TAM o' Shanters. These hats are typically made from wool and are associated with traditional Scottish culture.