mouldiworp, n. — Green’s Dictionary of Slang

mouldiworp n.

also modiewark, modiewart

[dial. mouldiwarp, a mole, lit. ‘earth-digger’/’earth-thrower’]

the penis.

c.1800		‘The Modiewark’ in Burns Merry Muses of Caledonia (1965) 179: The modiewark has done me ill, / And below my apron has biggit a hill.
c.1850		Peeping Tom (London) 12 48/3: [advert] tuzzy muzzy songster — The Mouldiwarp.
1890–1904		Farmer & Henley Sl. and Its Analogues.
1896		Farmer Vocabula Amatoria (1966) 66: Chouart, m. The penis; ‘the modiewart’.