Real Dictionary

Stamp Act in American English
a law passed by the British Parliament in 1765 to raise revenue, requiring that stamps be used for all legal and commercial documents, newspapers, etc. in the American colonies: it was repealed in March, 1766, because of strong colonial opposition
noun: an act of the British Parliament for raising revenue in the American Colonies by requiring the use of stamps and stamped paper for official documents, commercial writings, and various articles: it was to go into effect on November 1, 1765, but met with in

Stamp Act in British English
noun: a law passed by the British Parliament requiring all publications and legal and commercial documents in the American colonies to bear a tax stamp (1765): a cause of unrest in the colonies