The term 'European Tax' can be summarized by the crossword solution 'octroi', which is a tax levied on goods entering a particular region. It is typically imposed at the point of entry, such as a port or border crossing, and is used to raise revenue for local governments. Octroi is a French word that is derived from the Latin octroyer, meaning 'to grant'. It is most commonly used in Europe, but is also found in other parts of the world.