Pirate (noun)

1. A person who attacks and robs ships at sea.
2. A person who illegally reproduces or distributes copyrighted material, such as software, music, or movies.

Origin:

From old french pirate, from latin pirata ("pirate"), from ancient greek πειρατής (peiratēs, "one who attacks ships, pirate"), from πειράομαι (peiráomai, "i attempt, try").

Examples:

1. The pirates boarded the ship and stole the valuable cargo.
2. The coast guard was on the lookout for pirate ships.
3. He was accused of being a software pirate and faced legal action.
4. The movie was downloaded from a pirate website and was a poor quality copy.
5. The company's software was pirated and sold on the black market.