Green’s Dictionary of Slang

1. the neck, the head.

1523–4		Skelton ‘How the Douty Duke of Albany’ in Henderson Complete Poems (1948) 406: I shrewe thy Scottishe lugges, Thy munpynnys, and thy crag.
1622		Middleton & Rowley The Changeling I ii: The devil put the rope about her crag.
1635		H. Glapthorne Lady Mother V ii: I will goe to, and there be a wench to be got for love or money, rath[er] then plot murder: ’tis the sweeter sinn; besides, theres no danger of ones cragg.
c.1698		B.E. Dict. Canting Crew.
1725		New Canting Dict.
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict.
1772		Bridges Burlesque Homer (3rd edn) 15: You would have sworn this mortal twitch / Had given old peleus’ son the itch, / So hard he scratch’d his scurvy crag.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1797		Bridges Burlesque Homer (4th edn) II 312: He lent him such a rare hard knock / Upon his crag.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.

2. the stomach, the womb.

1725		New Canting Dict.
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. 1725].