Green’s Dictionary of Slang

1. a dandified, conceited young man; also attrib.

1540		G. Gnapheus (trans.) Comedye of Acolastus R ij b: Aco.: Wylt thou gold .i. any pieces of golde? Lais.: This chayne my lyttell prycke .i. I wolde fayne haue this chayne (of golde) my pretye pryncockes [L. mea mentula], or my ballocke stones [OED].
1560		Nice Wanton A iiii: What ye pryincockes, begin ye to raue?
1568		Hist. of Jacob and Esau V x: It is your deinty dearlyng, your princkoxe, your golpoll.
1573		New Custom I ii: Thinkest thou I haue no Logique, in dede thinkest thou soe? Yes princockes, that I haue.
1582		Stanyhurst Of Virgil his Æneis II: This princox in mydst of throng stood unarmed.
1592		Greene Quip for an Upstart Courtier B4: I will teach thee a lesson worth the hearing, proud princkocks.
1595		‘W.S.’ Lamentable Tragedie of Locrine II v: Nor wreake I of thy threats thou princox boy.
1598		Florio Worlde of Wordes n.p.: Pinchino, a pillicock, a primcock, a prick, a prettie lad, a gull, a noddie.
1600		Look About You xx: I hope thou wilt nor cheat me, princocks John!
1606		Return from Parnassus Pt II III ii: Whereas your proud Vniuersitie princox thinkes he is a man of such merit the world cannot sufficiently endow him with preferment.
1617		J. Minsheu Ductor in Linguas n.p.: Princocke, a ripe headed yong boy.
1632		Massinger Emperour of the East IV i: Though I am a zwaine, I haue a heart yet, As ready to doe seruice for my leege, As any Princox Peacock of you all.
1640		T. Heywood Love’s Mistress II i: And who do you think maintains this princox in his Ponficalibus?
1663		W. Davenant Play-House to be Let Act V: Proud princock-Caesar hardly seems to mind him.
1672		J. Phillips Maronides (1678) VI 60: What Princock Knight with Sword and Lance / So boldly dares to Boat advance.
1674		T. Duffet Empress of Morocco Act III: Princox, I scorn thee.
1683		Fifteen Real Comforts of Matrimony 61: It hapn’d well for Father Princock, whose master […] was now become his perfect slave.
c.1698		B.E. Dict. Canting Crew n.p.: Princock a pert forward Fellow.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1775		Kentish Gaz. 25 Mar. n.p.: A Farce [...] called The Crisis; or What You Please? [...] Brainsick, Mr James; Probable, Mr Parks; Boorish, Mr Phelps; Princock, Mr Richland.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue n.p.: Princox, a pert, lively, forward fellow.
1811		Lex. Balatronicum [as cit. 1785].
1821		W. Scott Kenilworth I 145: God save us from all such misproud princoxes!
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1850		E.V. Kenealy Goethe: a New Pantomime in Poetical Works 2 (1878) 336: Blusterer, Saucebox, Smell-feast, Weasel, / Swasher, Swaggerer, Princock, Chuff.

2. the vagina [may be error by F&H, more likely link to princod n.].

1890–1904

Farmer & Henley Sl. and Its Analogues.