A patch of featherless skin that is visible on the underside of birds during the nesting season, helping them to transfer heat to their eggs when incubating.

A surname.

A town in Anderson County and Abbeville County, South Carolina.

(statistics) Any set of possible values to which the appropriate random variables determined by a stochastic process might map a given point in the sample space, taken over all values of the index space (often regarded as time).

(computing) An early form of e-mail address with the components separated by exclamation marks, naming the sequence of networked computers that the mail should be routed through.

(archaic, neuroanatomy) The trochlear nerve.

plural of pathetic nerve

(biochemistry) A series of biochemical reactions between a stimulated receptor and an effector

(colloquial) Speech pathology. / (colloquial) A speech pathologist.

A kind of pattern used as a stimulus in experiments on vision, capable of being arranged to produce various optical illusions.