A state of East Asia; modern-day Taiwan (began in the early 20th century in mainland China).

(physics) The speed of electromagnetic radiation; in a perfect vacuum it is defined as 299,792,458 metres per second / (colloquial, figuratively) A very rapid speed.

The right of a citizen to travel within a state, and to leave and return to that state.

(analytic geometry) A system in which the coordinate axes are oblique to each other.

The hard pearly inner layer of certain mollusk shells; nacre. / A butterfly of the genus Salamis.

Made from or looking like mother-of-pearl; iridescent or pearly.

(idiomatic, UK) To embarrass oneself or others in public by behaving foolishly.

(slang, vulgar) Used to express anger, contempt, astonishment, disappointment, etc.

(derogatory, slang, vulgar) An objectionable, despicable person. / (derogatory, slang, vulgar) Any objectionable thing. / (US, vulgar, slang) An impressive, daring, or admirable man.

Alternative spelling of run-of-the-mill