acquaintance; personal knowledge of someone
Refers to knowing someone by face or having met them personally, not just knowing of them. Often used in negative forms like 面識がない to indicate no prior personal contact.
I haven't met him personally, so could you introduce me?
Only people who were personally acquainted were invited to the party.
I've met him before at a previous meeting.
I have never met that company president in person.
It's important to have met the contact person at a business partner in person.