Crater Climbing Holds. a similar depression or cavity that forms the opening of a volcano
a similar depression or cavity that forms the opening of a volcano or geyser. crater, circular depression in the surface of a planetary body. the round hole at the top of a volcano, or a hole in the ground similar to this: 2. " Dictionary of Military and Associated Terms. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. How to use crater in a sentence. . crater The pit, depression, or cavity formed in the surface of the Earth by an explosion. This landform is a bowl-shaped depression that marks the termination of the conduit through which molten rock, ash, and gases escape during an eruption. In the case of a deep underground burst, no rupture of the surface may occur.