Определение magnetic needle в Английский Язык Английский Язык словарь
A slender bar of magnetized steel usually suspended on a low-friction mounting and used in various instruments, especially in the magnetic compass, to indicate the direction of the earth's magnetic poles
thin magnetized rod placed within an instrument (a compass for example) to indicate the direction of the magnetic poles of earth
a slender magnet suspended in a magnetic compass on a mounting with little friction; used to indicate the direction of the earth's magnetic pole