The term 'Heraldic Emblem of Scotland' is represented by the word 'Thistle' in a crossword puzzle. The thistle is an important symbol of Scotland, and has been used as a national emblem since the reign of Alexander III in the 13th century. It is also the national flower of Scotland, and is featured on the Royal Coat of Arms of the United Kingdom. The thistle is a prickly plant that is native to Scotland, and its spiky leaves are said to represent the courage and strength of the Scottish people.