Glossary
What is a traffic pattern?
The rectangular path aircraft fly around a runway so they arrive in an orderly sequence, made up of the upwind, crosswind, downwind, base and final legs. Turns are to the left unless the airport publishes right traffic for that runway.
Also called Circuit
That is the whole entry for now. The longer version, with the mechanics and worked examples, is still to be written. See autorotation for how those read once they exist.