polestar
Học thuậtThân thiện
Definition
Noun: 1. A bright star used for guidance, especially the North Star: Historically, "polestar" refers to a prominent star, particularly Polaris (the North Star), that appears nearly stationary in the night sky and is used for celestial navigation because it indicates the direction of true north. 2. A principle or central point of attraction, guidance, or reference: Figuratively, "polestar" means a guiding principle, a central point of interest, or a fixed point of reference that provides direction or stability.
Examples of Usage
- Literal (Astronomical):
- Sailors of old relied on the polestar to navigate the open seas.
- Polaris, the current polestar, is part of the constellation Ursa Minor.
- Figurative (Guiding Principle):
- Honesty has always been her moral polestar.
- The company's commitment to quality is the polestar for all its decisions.
Advanced Usage
- "To be a polestar for someone/something": To serve as a guiding light or a central point of reference.
- Her unwavering optimism was a polestar for her friends during difficult times.
Variants and Related Words
- Polaris (n): The proper astronomical name for the current North Star, which is the brightest star in the constellation Ursa Minor.
- North Star (n): The common name for the polestar, Polaris.
- Lodestar (n): A direct synonym that can be used in both the literal (guiding star) and figurative (guiding principle) senses.
- Cynosure (n): A person or thing that is the center of attention or admiration. While related, it emphasizes being a focal point more than a guide.
Synonyms
- Guiding star: A star used for navigation.
- Lodestar: A star that leads the way; a guiding principle.
- Guide: Something that provides direction.
- Touchstone: A standard or criterion by which something is judged (related to the figurative sense of a reference point).
Idioms and Related Phrases
- (To be) One's polestar: To be someone's primary guide or principle.
- The pursuit of knowledge was his polestar throughout his life.
Noun
- the brightest star in Ursa Minor; at the end of the handle of the Little Dipper; the northern axis of the earth points toward it