The word "hush" is an interjection that means to be quiet or still, often used as a command. It can also mean to keep something secret or concealed, and in some cases it refers to a gentle sound made by blowing air gently through pursed lips.
Usage examples
I gently placed my finger over my lips to hush the crowd before delivering my speech.
The librarian raised her hand to hush the students talking in the library.
Trump slammed Rosenstein after the FBI on April 9 raided the home, office and hotel room of Trump's personal lawyer, Michael Cohen, who had arranged $ 130,000 in hush money for porn star Stormy Daniels. (nypost.com)
Before I get started, I wanted to mention that my crit partner Susan Bischoff is giving away a signed copy of Hush Money in celebration for having broken the 1000 sales mark only 12 weeks since release! (kaitnolan.com)
What rocketed this breed to superstardom was their place in history as the face of Hush Puppy shoes. (wagbrag.com)