noun, noun or participle which takes 'suru', transitive verb, intransitive verb
private talk; secret conversation; confidential discussion
Refers to a conversation held in private, often with a nuance of secrecy or confidentiality. Can be used as a noun or with する to mean 'to have a private talk'.
二人は会議室で密談を交わした。
The two had a private talk in the meeting room.
彼らは何時間も密
They were having a secret conversation for hours.