The definition of usury hasn't changed in 200 years.
From Webster's 1828 Edition:
U'SURY, noun s as z. [Latin usura, from utor, to use.]
1. Formerly, interest; or a premium paid or stipulated to be paid for the use of money.
[Usury formerly denoted any legal interest, but in this sense, the word is no longer in use.]
2. In present usage, illegal interest; a premium or compensation paid or stipulated to be paid for the use of money borrowed or retained, beyond the rate of interest established by law.
From Webster's 1828 Edition:
U'SURY, noun s as z. [Latin usura, from utor, to use.]
1. Formerly, interest; or a premium paid or stipulated to be paid for the use of money.
[Usury formerly denoted any legal interest, but in this sense, the word is no longer in use.]
2. In present usage, illegal interest; a premium or compensation paid or stipulated to be paid for the use of money borrowed or retained, beyond the rate of interest established by law.
3. The practice of taking interest. (obsolete)