Definition of "mark out" []

• To set the boundaries of an area (verb)
• To classify (verb)

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• "The inside passage has been called the Inner Route in consequence of its desirability for steamers, and our business has been to mark out this Inner Route safely and clearly among the labyrinth-like islands and reefs within the Barrier."
• "Theology and Ecclesiastical History; Law, Municipal and Foreign; Practice of Medicine; Materia Medica and Pharmacy; Surgery; Architecture, Military and Naval, and Projectiles; Technical Philosophy; Rural Economy; Fine Arts. On this survey of the field of science, I recur to the question, what portion of it we mark out for the occupation of our institution?"
• "For much of my life, I have lived with one behind my ear: either to mark out saw cuts or mortices for carpentry or to scribble marginalia or underlines when reading."