What does "yaw" mean?

Yaw: To rise in blisters, breaking in white froth, as cane juice in the clarifiers in sugar works.

Additional senses

  1. 2.To steer wild, or out of the line of her course; to deviate from her course, as when struck by a heavy sea; -- said of a ship. Just as he would lay the ship's course, all yawing being out of the question. Lowell.
  2. 3.A movement of a vessel by which she temporarily alters her course; a deviation from a straight course in steering.

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