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.
(..) Caprice Classic. You couldn't just give him one high-five? And where does it end? Then everyone's doing it. It's like the wave at ball games. Air quotes. The phrase, "Don't go there." Someone's gotta take a stand. This Arby's is good. So, George, I still don't understand. (..)1998 TvShow: Seinfeld Title: The Dealership Season: 9 Episode 11