Wiktionary
loansharking
vb. (present participle of loanshark English) (Committing crimes as a loan shark, committing usury (loaning money at excessive rate of interest) especially when collecting under threat of violence.)
Usage examples of "loansharking".
The Mick also ran bookmaking, loansharking, gambling, prostitution and dope rackets and killed an average of a dozen people a year.
He had bought it in the 1960s when it was a dowdy neighborhood tavern that regularly gave its owner a healthy $40,000 a year off the top and another $40,000 to $50,000 from non-taxable ancillary rights like numbers and loansharking and bookmaking.