smegmatic adjective 1noun 1forms 3 adjective1 •Of, relating to, or containing smegma. noun1 •(no longer used) A cleansing substance.If you glory in Captives, and desire by a sparkling splendour to fire Platonick Amoretto's out of their lawlesse liberty, borrow but lustre from these Artificiall Smegmaticks. — 1665 formssmegmatics · more smegmatic · most smegmatic