DictionarycompassDirection-finding instrument
noun

compass

KUM-pus/ˈkʌmpəs/

An instrument that indicates direction relative to magnetic north.

The compass needle points toward north.

A close-up of a magnetic compass, with a freely pivoting red-and-white needle pointing toward the N on its clearly marked directional dial.
Etymology

The roots connect with pacing out and measuring, leading to the name of the circle-drawing instrument. The magnetic direction-finder perhaps received the same name because it too was round and had a point.

In context

HISTORY17:15
Compass turned toward the magnet. But when we turn that off, it's going to turn back and point to the north. What that tells us is compass doesn't point to the north.
The Universe: Magnetic Storm Threatens Earth (S5, E3) | Full Episode | History

More examples

  • We checked the compass before leaving the trail.
  • A magnet interfered with the compass reading.
  • She carried a compass and a paper map.

Forms

compass · compasses

Similar words

magnetometer
Measures magnetic fields rather than necessarily displaying directions.