What is Um Friend?
1.
A partner in a sexual relationship on an ambiguous standing.
"This is Kate, my, um, friend."
2.
A member of the opposite sex who you are interested in and have been doing things with, but haven't made a move on. When introduced in public, you tend to say, "This is my um, friend ..."
"This is Jill, my ... um, friend."
See
