Mixes ones funds with others with the intention to confuse the trail back to the original source of the funds.
Compared to the traditional financial systems this service might be the equivalent of moving funds through banks located in countries that have strict bank-secrecy laws. Such countries include the Cayman Islands, the Bahamas, and Panama.
The term money laundering refers to practice of performing this mixing because the funds are illegally obtained. After laundering, the funds appear legitimate.