Greeting (noun)

1. An act of acknowledging someone's arrival or presence with a word or action, such as a wave or a handshake.
2. An expression of good wishes on meeting or in correspondence.

Origin:

Middle english: from old english gretan "address, salute, speak to", of germanic origin; related to greet.

Examples:

1. He gave her a warm greeting.
2. The greeting on the card read "Happy Birthday".
3. She received a lot of greetings on her birthday.
4. He greeted his guests as they arrived.
5. The company sent out seasonal greetings to its clients.