At the age of 80, she's 'riding a/the wave of' renewed interest in her work. [=she's experiencing a time when many people are interested in her work again]
The traffic cop 'waved' cars 'through'. [=waved in a way that told drivers to continue driving through a particular area]
The new school has triggered a 'wave' of optimism [=has made many people feel optimistic] about the public school system.
(..) Would never be the final sights that fell upon their eyes. A fly upon a wall, the waves the sea wind whipped and churned--" "The city of a thousand years, and all that men had learned; (..)2015 TvShow: Game of Thrones Title: Kill the Boy Season: 5 Episode 5