To make a mistake, or to sin. Ignorance. "Err" is not used today in everyday conversation (other than making the sound "errrrr") but the word can be found in the bible.
"To err is human, but to forgive is divine…" Huggy Bear "To err is human, but to forgive, well thats right on!" Bad guy in Starksy and Hutch
a term used in awkward situations, when in a confused state, or when trying to make a toughdecision.
Nick: hey eric, who's hotter.. Jaquann's sister or his girl?
eric: *glances at jaquann* "err...."
your interviewer asks: "You Have Read The Job Description And A Summary Of The Job Role So What Areas Of This Job Appeal To You The Least?"
you: "err...."