(astronomy) The distance from an observer in a universe beyond which it is impossible for the observer to see, as the light (or other luminal particles) cannot have travelled that distance over the current age of that universe.

(idiomatic) A theatrical production, film, or program on radio or television depicting adventures of characters in the American Old West; a western.

(biochemistry) A hormone, produced by anterior part of the pituitary gland, that stimulates ovulation and the development of the corpus luteum in female mammals, and the production of androgens by male mammals.

(biochemistry) A gonadotropic glycoprotein hormone, secreted in part of the pituitary gland, that stimulates the growth of ovarian follicles in female mammals, and induces spermatogenesis in male mammals.

(psychoanalysis) In Freudian psychoanalysis, an archetypal cathexis of the sons usurping their father's hierarchical position; the basis of the Oedipus complex, and sometimes resulting in totemism.

(geology) A form of graded bedding that occurs at the bottom of a body of water. The principle says that smaller colloids (particles) settle farther in the strata while larger particles settle closer to the source of water.

(intransitive, idiomatic) To fiddle or play; to clown; to do nothing of consequence or importance.

An Asian herb, of the genus Epimedium, used in traditional Chinese medicine for erectile dysfunction

The flesh of a horse; horsemeat. / Horses collectively, with reference to driving, riding, or racing. / A species of Bahama mahogany, Lysiloma sabicu and Lysiloma latisiliquum.

Of the colour of horseflesh; of a peculiar reddish-brown hue.