a hole for the escape of gas or air
external opening of urinary or genital system of a lower vertebrate
a fissure in the earths crust (or in the surface of some other planet) through which molten lava and gases erupt
[ Syn: volcano ]
a slit in a garment (as in the back seam of a jacket)
activity that frees or expresses creative energy or emotion; she had no other outlet for her feelings; he gave vent to his anger