(military slang, now historical) A large shell crater during the First World War.

(astrophysics) A region in the corona of a star where magnetic field lines extend out into space, allowing solar wind to escape.

plural of coronal hole

A saw in the form of a hollow cylinder with teeth on the end or edge, used to produce holes on the workpiece and operated by rotation, often as an accessory to a power drill.

(anatomy, slang, vulgar) vagina / (anatomy, slang, vulgar, gay culture) anus

Alternative form of rathole

plural of air hole

plural of maintenance hole

plural of s-hole

plural of c-hole