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 A sliding catch, or fastening, as for a door or gate; the portion of a lock which is shot or withdrawn by the action of the key.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