Any large, roughly circular depression or hole.
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.
A hemispherical pit created by the impact of a meteorite or other object.
The pit left by the explosion of a mine or bomb.
To form craters in a surface.
To collapse catastrophically; to become devastated or completely destroyed.
To crash or fall.
A small opening; a small pit or depression, especially in bone.
Any gap, break, hole, or lack in a set of things; something missing.
A language gap, which occurs when there is no direct translation in the target language for a lexical term found in the source language.
An absent part, especially in a book or other piece of writing, often referring to an ancient manuscript or similar.
A space visible between cells, allowing free passage of light.
A small blank space; a gap or vacancy; a hiatus.