This term applies to virtually everyone, everywhere, with the exception of the most elite among us. Everyone else uses money in at least some small way, and the effect is suffering as a result of the corrupt monetary system, where the rich profit from the labour of the masses. The richest rich offer nothing but their wealth, from which they make more wealth. The poor are constantly loosing ground, paying interest while their money's value is eroded by manufactured inflation. The result, the elite rich skim a little from absolutely everyone who uses money, there is no escaping it.
A white collar or office professional that has an expensive lifestyle. Typically single or married without kids. Loves shopping, partying, nightlife. Works hard and plays hard. Lifestyle makes them a slave to a high-paying, but infinitely boring and mundane career path, thusly enslaving them to the money. Said lifestyle is an escape from the monotony of work, but the income from work is needed to support the lifestyle. A vicious, enslaving, circle.