"We have a conversation."
Translation:Nos in colloquium venimus.
It's not really the meaning. I've checked in several Latin dictionaries, and it's not really this use.
It means to go in an interview (not a job interview), to go into a parley, a conference. A (collective) talk. Something like that.
In French, there's the descend word "colloque" that is very close. Colloquy in English.
Gaffiot for "colloquium":
a conversation, conference, discourse.
dialogue, rencontre, conversation (French)
1 talk, conversation
2 colloquy, discussion
4 meeting, conference
When it's used, through the examples dictionaries give, it means more a collective conversation, and "to go to a colloquium" is more going to an interview, to a meeting.