1. (n.) The basin like opening or mouth of a volcano, through which the chief eruption comes; similarly, the mouth of a geyser, about which a cone of silica is often built up.

2. (n.) The pit left by the explosion of a mine.

3. (n.) A constellation of the southern hemisphere; -- called also the Cup.

Antlia Antlia Pneumatica Apus Aquarius Ara Caela Sculptoris Caelum Camelopardus Cancer Columba Noae Corona Australis Corona Borealis Corvus Crater Crux Dorado Draco Equuleus Gemini Grus Hercules Horologium Hydra Lacerta Leo Leo Minor Lepus Libra Little Dipper Lupus Lynx Lyra Malus Mensa Microscopium Monoceros Musca Norma Northern Cross Octans Ophiuchus Orion Pegasus Phoenix Reticulum Sagittarius Scorpius Sculptor Scutum Sextans Southern Cross Taurus Telescopium Triangulum Triangulum Australe Tucana Ursa Major Ursa Minor Vela Virgo Volans Vulpecula the Balance the Bull the Crane the Cross the Crow the Cup the Dragon the Fly the Foal the Hare the Indian the Lion the Lizard the Lynx the Lyre the Mast the Octant the Rule the Sails the Sea Serpent the Serpent the Serpent Bearer the Sextant the Southern Crown the Swan the Table the Telescope the Toucan the Twins the Unicorn the Virgin the Water Bearer the Wolf the Wreath