Dove
A dove is a central banker or economic policy advisor who favours keeping interest rates low.
The policies of such individuals, and indeed the statements they make, are referred to in the financial media as being dovish, especially when attempting to make a case for keeping rates where they currently are or cutting them even further.
Dove policymakers are not concerned with inflation, which is why they opt to keep rates low.
Since the 2008 financial crisis there has been a rise in dovish economic policy, low (sometimes even negative) interest rates have been one of the tools used by central banks since the crisis in order to stimulate the economy.