As wavefunction notes, that is at best a very narrow definition.
Here is Wikipedia's:
"Rent-seeking is a concept in public choice theory as well as in economics, that involves seeking to increase one's share of existing wealth without creating new wealth. Rent-seeking results in reduced economic efficiency through misallocation of resources, reduced wealth-creation, lost government revenue, heightened income inequality, and potential national decline."
Here is Wikipedia's:
"Rent-seeking is a concept in public choice theory as well as in economics, that involves seeking to increase one's share of existing wealth without creating new wealth. Rent-seeking results in reduced economic efficiency through misallocation of resources, reduced wealth-creation, lost government revenue, heightened income inequality, and potential national decline."
https://en.wikipedia.org/wiki/Rent-seeking