The hand-hole, or manhole, in a steam boiler, by means of which sediment can be removed.

(physics) A vacant position in the atomic lattice of a conductor where an electron would normally be present

(slang) The state of dissociation from (and lack of control over) the body commonly experienced after taking relatively high doses of the drug ketamine.

plural of swimming hole

(chiefly Australia, New Zealand) An area for swimming in a stream or river.

(military slang) A concealed place where one can hide in safety, especially during a war; a dugout.

plural of funk hole

A cellar or other compartment for storing coal. / A hole in the pavement with a removable hatch, leading to an underground coal bunker.

A figurative place to which lost or forgotten information is sent, usually deliberately; nowhere. / (computing) A fragment of physical address space which does not map to main memory.

A sunken place in a road, caused by thawing, or by travel over a soft spot.