That means freeloader.

Or free rider, if you prefer.
Germany’s Merz tells BBC Europe was free-riding on US – German Chancellor Friedrich Merz has accepted US accusations that Europe was doing too little to fund its own defence and security, but now believes they are on the same page.
“We know we have to do more on our own and we have been free-riders in the past,” he told the BBC’s Today Programme, “they’re asking us to do more and we are doing more.”