butterfly

(transitive) To cut (food) almost entirely in half and spread the halves apart, in a shape suggesting the wings of a butterfly.

(transitive) To cut strips of surgical tape or plasters into thin strips, and place across (a gaping wound) to close it.

(transitive, of the point of divergence of an alternate history scenario) To cause events after the point of divergence to not happen as they did in real history, and people conceived after the point of divergence to not exist in recognizable form, due to the random variations introduced by the butterfly effect.