To say goodbye; to wish somebody farewell on parting.
Farewell; a formula used to another person or persons when the speaker, writer, or person addressed is departing.
An utterance of goodbye, the wishing of farewell to someone.
To cry "hallo" (to someone).
To shout, or to call with a loud voice.
To chase while shouting "hallo!"
To shout (something).
The cry "hallo!"
A shout of exultation.