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The Collaborative International Dictionary
Bolt auger

Bolt \Bolt\, n. [AS. bolt; akin to Icel. bolti, Dan. bolt, D. bout, OHG. bolz, G. bolz, bolzen; of uncertain origin.]

  1. A shaft or missile intended to be shot from a crossbow or catapult, esp. a short, stout, blunt-headed arrow; a quarrel; an arrow, or that which resembles an arrow; a dart.

    Look that the crossbowmen lack not bolts.
    --Sir W. Scott.

    A fool's bolt is soon shot.

  2. Lightning; a thunderbolt.

  3. A strong pin, of iron or other material, used to fasten or hold something in place, often having a head at one end and screw thread cut upon the other end.

  4. A sliding catch, or fastening, as for a door or gate; the portion of a lock which is shot or withdrawn by the action of the key.

  5. An iron to fasten the legs of a prisoner; a shackle; a fetter. [Obs.]

    Away with him to prison! lay bolts enough upon him.

  6. A compact package or roll of cloth, as of canvas or silk, often containing about forty yards.

  7. A bundle, as of oziers.

    Bolt auger, an auger of large size; an auger to make holes for the bolts used by shipwrights.

    Bolt and nut, a metallic pin with a head formed upon one end, and a movable piece (the nut) screwed upon a thread cut upon the other end. See B, C, and D, in illust. above.

    Note: See Tap bolt, Screw bolt, and Stud bolt.