The Collaborative International Dictionary of English v.0.48:

Sling \Sling\, n. [OE. slinge; akin to OD. slinge, D. slinger,
   OHG. slinga; cf. OF. eslingue, of German origin. See Sling,
   v. t.]
   1. An instrument for throwing stones or other missiles,
      consisting of a short strap with two strings fastened to
      its ends, or with a string fastened to one end and a light
      stick to the other. The missile being lodged in a hole in
      the strap, the ends of the string are taken in the hand,
      and the whole whirled rapidly round until, by loosing one
      end, the missile is let fly with centrifugal force.
      [1913 Webster]

   2. The act or motion of hurling as with a sling; a throw;
      figuratively, a stroke.
      [1913 Webster]

            The slings and arrows of outrageous fortune. --Shak.
      [1913 Webster]

            At one sling
            Of thy victorius arm, well-pleasing Son. --Milton.
      [1913 Webster]

   3. A contrivance for sustaining anything by suspension; as:
      (a) A kind of hanging bandage put around the neck, in
          which a wounded arm or hand is supported.
      (b) A loop of rope, or a rope or chain with hooks, for
          suspending a barrel, bale, or other heavy object, in
          hoisting or lowering.
      (c) A strap attached to a firearm, for suspending it from
          the shoulder.
      (d) (Naut.) A band of rope or iron for securing a yard to
          a mast; -- chiefly in the plural.
          [1913 Webster]

   Sling cart, a kind of cart used to transport cannon and
      their carriages, large stones, machines, etc., the objects
      transported being slung, or suspended by a chain attached
      to the axletree.

   Sling dog, one of a pair of iron hooks used as part of a
      sling. See def. 3
      (b) above.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sling \Sling\, v. t. [imp. Slung, Archaic Slang; p. p.
   Slung; p. pr. & vb. n. Slinging.] [AS. slingan; akin to
   D. slingeren, G. schlingen, to wind, to twist, to creep, OHG.
   slingan to wind, to twist, to move to and fro, Icel. slyngva,
   sl["o]ngva, to sling, Sw. slunga, Dan. slynge, Lith. slinkti
   to creep.]
   1. To throw with a sling. "Every one could sling stones at an
      hairbreadth, and not miss." --Judg. xx. 16.
      [1913 Webster]

   2. To throw; to hurl; to cast. --Addison.
      [1913 Webster]

   3. To hang so as to swing; as, to sling a pack.
      [1913 Webster]

   4. (Naut) To pass a rope round, as a cask, gun, etc.,
      preparatory to attaching a hoisting or lowering tackle.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sling \Sling\, n. [Cf. G. schlingen to swallow.]
   A drink composed of spirit (usually gin) and water sweetened.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sling
    n 1: a highball with liquor and water with sugar and lemon or
         lime juice
    2: a plaything consisting of a Y-shaped stick with elastic
       between the arms; used to propel small stones [syn:
       slingshot, sling, catapult]
    3: a shoe that has a strap that wraps around the heel [syn:
       slingback, sling]
    4: a simple weapon consisting of a looped strap in which a
       projectile is whirled and then released
    5: bandage to support an injured forearm; consisting of a wide
       triangular piece of cloth hanging from around the neck [syn:
       sling, scarf bandage, triangular bandage]
    v 1: hurl as if with a sling [syn: sling, catapult]
    2: hang loosely or freely; let swing
    3: move with a sling; "sling the cargo onto the ship"
    4: hold or carry in a sling; "he cannot button his shirt with
       his slinged arm"

Moby Thesaurus II by Grady Ward, 1.0:

121 Moby Thesaurus words for "sling":
   Ace bandage, Band-Aid, adhesive tape, application, arbalest,
   ballista, band, bandage, bandaging, belt, binder, bowl, brace,
   bung, cast, cast at, cataplasm, catapult, change of pace,
   change-up, chuck, chuck at, chunk, compress, cotton, court plaster,
   cravat, curve, dangle, dart, dash, depend, downcurve, dressing,
   elastic bandage, epithem, fastball, fasten up, fire, fire at,
   fling, fling at, flip, fork, forward pass, four-tailed bandage,
   gauze, hang, hang up, heave, heave at, hurl, hurl against, hurl at,
   hurtle, incurve, jerk, knuckleball, lance, lateral, lateral pass,
   launch, let fly, let fly at, lint, lob, march, outcurve, pass, peg,
   pelt, pitch, pitchfork, plaster, plaster cast, pledget, poultice,
   propel, put, put the shot, put up, roller, roller bandage,
   rubber bandage, screwball, serve, service, shoot, shot-put, shy,
   shy at, sinker, slider, sling at, slingshot, snap, sock, spitball,
   spitter, splint, sponge, stalk, strap, stupe, support, suspend,
   tampon, tape, tent, throw, throw at, throw stick, throwing-stick,
   tilt, toss, toss at, tourniquet, trebuchet, triangular bandage,
   upcurve, wommera



Easton's 1897 Bible Dictionary:

Sling
   With a sling and a stone David smote the Philistine giant (1
   Sam. 17:40, 49). There were 700 Benjamites who were so skilled
   in its use that with the left hand they "could sling stones at a
   hair breadth, and not miss" (Judg. 20:16; 1 Chr. 12:2). It was
   used by the Israelites in war (2 Kings 3:25). (See ARMS.)

     The words in Prov. 26:8, "As he that bindeth a stone in a
   sling," etc. (Authorized Version), should rather, as in the
   Revised Version, be "As a bag of gems in a heap of stones," etc.