What is Apparent Danger?

Legal Definition
as used with reference to the doctrine of self-defense in homicide, means such overt actual demonstration, by conduct and acts, of a design to take life or do some great personal injury, as would make the killing apparently necessary to self-preservation. Evans v. State, 44 Miss. 773; Stoneman v. Co.m., 25 Grab (Vat) 896; Leigh v. People, 113 I1L 379.
-- Black's Law Dictionary