EBU Single Rulebook Q&A 24 February 2016 2016_2642 Definition of a 'Deposit Broker'

What is the definition of a deposit broker? If a wide definition of a deposit broker is used, non-operational deposits from financials could be taken by banks via a deposit broker and would then be subject to a 40% outflow insterad of a 100% outflow. The US LCR rules cross refer to the FDIC definition of a deposit broker which requires these deposits to be covered by FDIC insurance.