noun

1. the act or an instance of talking together; specif.,
   1. familiar talk; verbal exchange of ideas, opinions, etc.
   2. an informal conference on a problem or area of interest by representatives of governments, factions, etc.
2. sexual intercourse: now only in the legal phrase criminal conversation, i.e., adultery as grounds for divorce or other action
3. Archaic manner of living; behavior
4. Obsolete social intercourse
5. Obsolete familiarity based on study or use

Etymology: ME conversacioun < OFr conversation < L conversatio < pp. of conversari: see converse