(idiomatic) A fundamental rule or principle. / (ethics) The principle that one should treat other people in the manner in which one would want to be treated by them.

A test that measures a binary value without error.

Alternative form of gold digger

Someone who digs or mines for gold. / (figuratively, derogatory) A person (usually female) who cultivates a personal relationship in order to attain wealth.

(geometry) The irrational number (approximately 1.618), usually denoted by the Greek letter φ (phi), which is equal to the sum of its own reciprocal and 1, or, equivalently, is the square root of the sum of itself and 1.

(baseball) A humorous verbal "award" given to a batter who has struck out four times in a single game.

A young woman who has become unusually successful at an early age. / A favored youth, held in high esteem by others, and for whom there are high hopes.

(chiefly historical) Any period of feverish migration into an area in which gold has been discovered. / (figuratively) A feverish obsession with seeking profits, especially in new markets.

A giant who, according to the Bible, was vanquished in battle with King David. / A male given name from Hebrew

(figuratively) Any large person or thing; someone or something that is abnormally large or powerful.