The Collaborative International Dictionary of English v.0.48:

Vertical \Ver"ti*cal\, a. [Cf. F. vertical. See Vertex.]
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   1. Of or pertaining to the vertex; situated at the vertex, or
      highest point; directly overhead, or in the zenith;
      perpendicularly above one.
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            Charity . . . is the vertical top of all religion.
                                                  --Jer. Taylor.
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   2. Perpendicular to the plane of the horizon; upright; plumb;
      as, a vertical line.
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   Vertical angle (Astron. & Geod.), an angle measured on a
      vertical circle, called an angle of elevation, or
      altitude, when reckoned from the horizon upward, and of
      depression when downward below the horizon.

   Vertical anthers (Bot.), such anthers as stand erect at the
      top of the filaments.

   Vertical circle (Astron.), an azimuth circle. See under
      Azimuth.

   Vertical drill, an upright drill. See under Upright.

   Vertical fire (Mil.), the fire, as of mortars, at high
      angles of elevation.

   Vertical leaves (Bot.), leaves which present their edges to
      the earth and the sky, and their faces to the horizon, as
      in the Australian species of Eucalyptus.

   Vertical limb, a graduated arc attached to an instrument,
      as a theodolite, for measuring vertical angles.

   Vertical line.
      (a) (Dialing) A line perpendicular to the horizon.
      (b) (Conic Sections) A right line drawn on the vertical
          plane, and passing through the vertex of the cone.
      (c) (Surv.) The direction of a plumb line; a line normal
          to the surface of still water.
      (d) (Geom., Drawing, etc.) A line parallel to the sides of
          a page or sheet, in distinction from a horizontal line
          parallel to the top or bottom.

   Vertical plane.
      (a) (Conic Sections) A plane passing through the vertex of
          a cone, and through its axis.
      (b) (Projections) Any plane which passes through a
          vertical line.
      (c) (Persp.) The plane passing through the point of sight,
          and perpendicular to the ground plane, and also to the
          picture.

   Vertical sash, a sash sliding up and down. Cf. French
      sash, under 3d Sash.

   Vertical steam engine, a steam engine having the crank
      shaft vertically above or below a vertical cylinder.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Drill \Drill\, n.
   1. An instrument with an edged or pointed end used for making
      holes in hard substances; strictly, a tool that cuts with
      its end, by revolving, as in drilling metals, or by a
      succession of blows, as in drilling stone; also, a drill
      press.
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   2. (Mil.) The act or exercise of training soldiers in the
      military art, as in the manual of arms, in the execution
      of evolutions, and the like; hence, diligent and strict
      instruction and exercise in the rudiments and methods of
      any business; a kind or method of military exercises; as,
      infantry drill; battalion drill; artillery drill.
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   3. Any exercise, physical or mental, enforced with regularity
      and by constant repetition; as, a severe drill in Latin
      grammar.
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   4. (Zool.) A marine gastropod, of several species, which
      kills oysters and other bivalves by drilling holes through
      the shell. The most destructive kind is Urosalpinx
      cinerea.
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   Bow drill, Breast drill. See under Bow, Breast.

   Cotter drill, or Traverse drill, a machine tool for
      drilling slots.

   Diamond drill. See under Diamond.

   Drill jig. See under Jig.

   Drill pin, the pin in a lock which enters the hollow stem
      of the key.

   Drill sergeant (Mil.), a noncommissioned officer whose
      office it is to instruct soldiers as to their duties, and
      to train them to military exercises and evolutions.

   Vertical drill, a drill press.
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