·vt To cause to burst forth; to Eject; as, to erupt lava.
II. Erupt ·add. ·vi To eject something, ·esp. lava, water, ·etc., as a volcano or geyser.
III. Erupt ·add. ·vi To burst forth; to break out, as ashes from a volcano, teeth through the gums, ·etc.