crater

noun

1. a bowl-shaped geological formation at the top of a volcano

   noun.object

   Synonyms volcanic crater

   Source: WordNet 3.0

2. a faint constellation in the southern hemisphere near Hydra and Corvus

   noun.object

   Source: WordNet 3.0

3. a bowl-shaped depression formed by the impact of a meteorite or bomb

   noun.object

   Source: WordNet 3.0

4. The basinlike 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.

   noun

   Source: webster1913