run off (Noun) — The occurrence of surplus liquid (as water) exceeding the limit or capacity.
run off (Noun) — A final election to resolve an earlier election that did not produce a winner.
run off (Verb) — Run away; usually includes taking something or somebody along. ex. "the accountant ran off with the cash from the safe"
run off (Verb) — Leave suddenly and as if in a hurry. ex. "When she started to tell silly stories, I ran off"
run off (Verb) — Force to go away; used both with concrete and metaphoric meanings. ex. "The supermarket had to run off many disappointed customers"
run off (Verb) — Run away secretly with one's beloved. ex. "The young couple ran off and got married in Las Vegas"
run off (Verb) — Run off as waste. ex. "The water runs off back into the ocean"
run off (Verb) — Reproduce by xerography.
run off (Verb) — (game) decide (a contest or competition) by a runoff.