Meaning

• 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.

• A kind of hanging bandage put around the neck, in which a wounded arm or hand is supported.

• A loop of cloth, worn around the neck, for supporting a baby or other such load.

• A loop of rope, or a rope or chain with hooks, for suspending a barrel, bale, or other heavy object, in hoisting or lowering.

• A strap attached to a firearm, for suspending it from the shoulder.

• (chiefly in the plural) A band of rope or iron for securing a yard to a mast.

• The act or motion of hurling as with a sling; a throw; figuratively, a stroke.

• A loop of rope or fabric tape used for various purposes: e.g. as part of a runner, or providing extra protection when abseiling or belaying.

• A drink composed of a spirit (usually gin) and water sweetened.

  "a Singapore sling"

Meaning

• To throw with a circular or arcing motion.

• To throw with a sling.

• To pass a rope around (a cask, gun, etc.) preparatory to attaching a hoisting or lowering tackle.

• To sell, peddle, or distribute illicitly (e.g. drugs, sex, etc.).