two-track

[too-trak]Dressage.
noun
  1. an oblique movement of a horse in which the forehand and hindquarters move on two distinct parallel tracks and the body is maintained uniformly in the direction of the movement.
verb (used without object)
  1. (of a horse) to execute a two-track.
verb (used with object)
  1. to cause (a horse) to two-track.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of two-track