activity that frees or expresses creative energy or emotion | the sudden occurrence of a violent discharge of steam and volcanic material |
external opening of urinary or genital system of a lower vertebrate | a sudden very loud noise |
a hole for the escape of gas or air | the emergence of a tooth as it breaks through the gum |
a slit in a garment (as in the back seam of a jacket) | a sudden violent spontaneous occurrence (usually of some undesirable condition) |
a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt | (of volcanoes) pouring out fumes or lava (or a deposit so formed) |
| symptom consisting of a breaking out and becoming visible |