A) A Germanic language spoken by inhabitants of the Netherlands and parts of Belgium (known there as Flemish). Derived from Germany's language Deutsch (German). Contrary to popular belief, Dutch is not a form of German, it is simply a Germanic language, in the same respects as French and Italian are both Romance languages.
B) A product or person from the Netherlands. Known in the country as 'Nederlander'.
C) A term used for Marijuana because it is commonly known that pot and other drugs are legal in the Netherlands.
A) "I will be taking a Dutch class this semester so when I visit the Netherlands, I'll be able to converse with the locals."
A blunt(cigar emptied of tobacco and filled with marijuana) rolled in the popular type of cigar called a "Dutch Master". Usually split up into the inner leaf-paper and the outer leaf wrap, then marijuana is rolled inside the paper and the leaf is wrapped around the outside.