One of the twelve houses
House 3
The third house is your immediate surroundings. The tradition links it with conversation, learning, short trips, siblings and neighbours.
How the tradition reads the houses
The houses divide the sky of the moment of birth into twelve fields, counted from the Ascendant. A planet in a given house shows in which area of life the tradition sees it at work. Houses need the time and place of birth, and without the time there are no houses.
This house's sign in the natural wheel
In the natural wheel the first house corresponds to Aries and each following house to the next sign. It is the tradition's teaching map, not where the houses fall in anyone's chart.