Definition of doghole:
(n) :
(idiomatic, derogatory) A place regarded as fit only for dogs: a horrid, mean habitation.
(n) :
A small, shallow bay or inlet, usually surrounded by high cliffs, that is accessible only by smaller boats.
(n) :
A type of small schooner designed in the 19th century to navigate in shallow waters and to conduct coastal shipping in and out of doghole ports.
(n) :
(mining, slang) A mine worked by fewer than fifteen miners, which is small enough that some safety laws do not apply.
(n) :
Such a small mine that is dug independently by one or a few miners, often clandestinely and illegally: a bootleg mine.
(n) :
(mining) An excavated area that acts as an access hole or that connects different parts of a mine.