handshake
nounUK /ˈhændʃeɪk/
US /ˈhændʃeɪk/
A handshake is when two people hold each other's hand and move them up and down to say hello or well done.
The two leaders smiled and gave each other a firm handshake.
OTHER MEANINGS
2. A gesture of agreement or friendship made by clasping hands.
They sealed the deal with a handshake.
3. In computing, an exchange of signals between two devices to start communication.
The modem and the computer completed a handshake before sending data.
4. A brief gripping of hands as a greeting or congratulation.
He received a warm handshake from his coach after the game.