noun.
A cavity in the side of the head, between the eye and nostril, found in the poisonous snakes of the subfamily Crotalinæ, whence their name of pit-vipers. This pit is lined with membrane supplied with branches from the trigeminal nerve, but its exact function is not known. See cut under pit-viper
noun.
A hole or cavity in the ground, whether natural or made by digging.
noun.
Specifically
noun.
An excavation or hole in the ground, covered or otherwise concealed, for snaring wild beasts; a pitfall.
noun.
A hole dug in the soil of a potato-or turnip-field, for storing potatoes, etc., during the winter. The vegetables stored are usually piled up to some height and covered with earth to keep out the frost.
noun.
In horticulture, an excavation in the soil, generally covered by a glazed frame, for protecting tender plants, or for propagation.
noun.
In founding, a cavity scooped in the floor to receive cast-metal.
noun.
The shaft of a coal-mine, or the mine itself.
noun.
A vat, such as is used in tanning, bleaching, dyeing, etc.
noun.
A cavity or depression in the body: as, the pit of the stomach; the armpits.
noun.
A very small depression or dent, such as that left on the flesh by a pustule of the small-pox; a dimple.
noun.
In botany, one of the pores or thin places in the more or less lignified cell-walls of many plants.
noun.
A hollow or cup.
noun.
A deep place; a gulf; an abyss.
noun.
The abode of evil spirits; hell.