noun

1. greeting; greetings; salutation; salute; (explanation) polite set phrase used when meeting or parting from someone
2. speech (congratulatory or appreciative); address
3. reply; response
4. courtesy visit (to offer condolences, say congratulations, pay respect, introduce oneself, etc.)
5. colloquial revenge; retaliation
6. archaic dialoging (with another Zen practitioner to ascertain their level of enlightenment) (orig. meaning)
7. archaic relationship (between people); connection
8. archaic intervention; mediation; mediator

exp.

9. jocular a fine thing to say (used sarcastically as a response to a rude remark; usu. in the form of ご挨拶)