salutation

noun4

1. •
   A greeting, salute, or address; a hello.
2. •
   A conventional greeting that begins a letter, such as "Dear Sir".
3. •
   The act of greeting.

   • Welcome, we²l'ku²m. a. Received with gladness, admitted willingly, grateful[…] Welcome, we²l'ku²m. interj. A form of salutation used to a new comer. — 1791
4. •
   (no longer used) Quickening; excitement.