What does "harrow" mean?

Harrow: (Mil.) An obstacle formed by turning an ordinary harrow upside down, the frame being buried. Bush harrow, a kind of light harrow made of bushes, for harrowing grass lands and covering seeds, or to finish the work of a toothed harrow. -- Drill harrow. See under 6th Drill. -- Under the harrow, subjected to actual torture with a toothed instrument, or to great affliction or oppression.

Additional senses

  1. 2.To draw a harrow over, as for the purpose of breaking clods and leveling the surface, or for covering seed; as, to harrow land. Will he harrow the valleys after thee Job xxxix.
  2. 3.2. To break or tear, as with a harrow; to wound; to lacerate; to torment or distress; to vex. My aged muscles harrowed up with whips. Rowe. I could a tale unfold, whose lightest word Would harrow up thy soul. Shak.
  3. 4.Help! Halloo! An exclamation of distress; a call for succor;- the ancient Norman hue and cry. "Harrow and well away!" Spenser. Harrow! alas! here lies my fellow slain. Chaucer.
  4. 5.To pillage; to harry; to oppress. [Obs.] Spenser. Meaning thereby to harrow his people. Bacon

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