The English "pirate" is derived from the Latin term pirata, and ultimately from Greek peira (πεῖρα) "attempt, experience", implicitly "to find luck on the sea". The word is also cognate to peril. In 17th and 18th century sources the word is often rendered "pyrate". However, the term does not exclusively relate to robbery committed at the sea, as other similar origins have a broader definition. -Wikipedia
A .pdf to make paper-pirates! The created pirates will probably not make it to the end of their journey if acted out in a bathtub (as suggested by exciting pirates sea adventures), but their ephemeral existence will conceptually inspire your story plot!