'Scrag' definitions:

Definition of 'scrag'

noun

A person who is unusually thin and scrawny [syn: thin person, skin and bones, scrag] [ant: butterball, fat person, fatso, fatty, roly-poly]

noun

Lean end of the neck

noun

The lean end of a neck of veal [syn: scrag, scrag end]

verb

Strangle with an iron collar; "people were garrotted during the Inquisition in Spain" [syn: garrote, garrotte, garotte, scrag]

verb

Wring the neck of; "The man choked his opponent" [syn: choke, scrag]

From: GCIDE

Scrag \Scrag\ (skr[a^]g), n. [Cf. dial. Sw. skraka a great dry tree, a long, lean man, Gael. sgreagach dry, shriveled, rocky. See Shrink, and cf. Scrog, Shrag, n.]
1. Something thin, lean, or rough; a bony piece; especially, a bony neckpiece of meat; hence, humorously or in contempt, the neck. [1913 Webster]
Lady MacScrew, who . . . serves up a scrag of mutton on silver. --Thackeray. [1913 Webster]
2. A rawboned person. [Low] --Halliwell. [1913 Webster]
3. A ragged, stunted tree or branch. [1913 Webster]
Scrag whale (Zool.), a North Atlantic whalebone whale (Agaphelus gibbosus). By some it is considered the young of the right whale. [1913 Webster]

From: GCIDE

Scrag \Scrag\, v. t. [Cf. Scrag.] To seize, pull, or twist the neck of; specif., to hang by the neck; to kill by hanging. [Colloq.]
An enthusiastic mob will scrag me to a certainty the day war breaks out. --Pall Mall Mag. [Webster 1913 Suppl.]