The empirical principle that most systems will work best if they are kept simple rather than made complex.

(idiomatic, colloquial, US) No longer in quiet and comfortable surroundings

A state of the mid United States. Capital: Topeka. / University of Kansas.

(music) A musical key based upon a major scale. / (idiomatic) A mood of cheerfulness or happiness.

(idiomatic) In an unrestrained manner; on a large or expansive scale.

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

(music) A musical key based upon a minor scale. / (idiomatic) A mood of melancholy or pathos.

(idiomatic) In a restrained manner; on a small or limited scale.

An instrument consisting of a tube containing mirrors and loose, colourful beads or other objects; when the tube is looked into and rotated, a succession of symmetrical designs can be seen.

(intransitive) To move in shifting (and often attractive or colourful) patterns.