farewell

Short definition from Wiktionary

Noun

1. 1
   A wish of happiness or safety at parting, especially a permanent departure.
2. 2
   A departure; the act of leaving.

Adjective

1. 1
   Parting, valedictory, final.

Interjection

1. 1
   Goodbye; vale.

Verb

1. 1
   To bid farewell or say goodbye.

Proper noun

1. 1
   A hamlet in Farewell and Chorley parish, Lichfield district, Staffordshire, England (OS grid ref SK0811).
2. 2
   A surname.