#1 eruption n. [volcanic eruption] the sudden occurrence of a violent discharge of steam and volcanic material. wn
#2 eruption n. symptom consisting of a breaking out and becoming visible. wn
#3 eruption n. [eructation, extravasation] (of volcanos) pouring out fumes or lava (or a deposit so formed). wn
#4 eruption n. [outbreak, irruption] a sudden violent spontaneous occurrence (usually of some undesirable condition); "the outbreak of hostilities". wn
#5 eruption n. [bang, clap, blast, bam] a sudden very loud noise. wn
vizzz