(logic) Describing situations in which the veracity of a statement may be shown to be true without revealing any other information.

(cryptography) An interactive method for one party to prove to another that a (usually mathematical) statement is true, without revealing anything other than the veracity of the statement.

A course of study which must be completed by prospective London taxi drivers; consists of 320 routes through central London and many significant places.

(archaic, chiefly law) Sexual intercourse.

(computing) a bot that roams a distributive network (especially the Internet) to gather or distribute information

A knowledge of how to make something work without deeper theoretical understanding of why it works.

Someone who works with information or data.

A unified body or collection of knowledge regarding a specific subject.

a user interface element similar to a graphical organizer, which visualizes connections between data by a series of shapes (or images) representing ideas and arrows representing relations between them.

Having knowledge, especially of a particular subject. / Educated and well informed.