Wiktionary
roar on
vb. To cheer loudly for.
Usage examples of "roar on".
They still broke with a shattering roar on the little beach and against the rocks on either side, but there was not the same strength in them.
He played the silence of a ghost roar on the rising air beneath a shivering honey-colored moon.
There was a roar on the southern shore as the pump engines came to life.
They passed him, making a little pattering roar on the hard-caked sand.
Big seas piled up in the narrow entrance, filling the cove with an ugly swell, which broke in a roar on the shingle beach.
Its steady beating made a dull roar on the thick leaves of the triple canopy jungle.