'Slinging' definitions:

Definition of 'slinging'

noun

Throwing with a wide motion (as if with a sling)

From: GCIDE

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]