What is the meaning of Scrag?

A thin or scrawny person or animal.

The lean end of a neck of mutton; the scrag end.

The neck, especially of a sheep.

A scrog. (Can we add an example for this sense?)

A chav or ned; a stereotypically loud and aggressive person of lower social class.

A rough or unkempt woman.

A ragged, stunted tree or branch.

To hang on a gallows, or to choke, garotte, or strangle.

To harass; to manhandle.

To destroy or kill.

Source: wiktionary.org