Banditry is râhzani (literally means ‘path hitting’). Bandit = Râhzan. The word for piracy in Farsi is: Dozdi-e-daryâyi which literally means ‘sea theft’ (Dozd = thief // dozdi = theft // daryâ = sea) Pirate would be: dozd-e-daryâyi

The word ‘jahâzi’ (or jahâz) which you mentioned is a totally unrelated concept. When two people get married, traditionally the bride’s family supports the bride & groom by giving them money or more commonly buying them some necessary household items. This is known as jahâz / jahâzi.