1rare A practical activity, (in early use) especially one of the actions or activities which go to make up the practice of a craft or profession; (more generally) an action, a deed; (in later use, in plural) practicalities, practical matters.
2A stratagem, a trick, a deception; (as a mass noun) machination, cunning, deceit. "†to prove practics": to indulge in or practise trickery (obsolete). Scottish after Middle English.
historical A customary usage or established procedure; (hence) a precedent; (in plural, now usually in form practicks) an unofficial compendium of decisions and precedents and often other encyclopaedic legal material; frequently in the titles of such works.
Late Middle English (in an earlier sense). From Anglo-Norman practik, practiqe and Middle French practique, praticque, pratique (French pratique) application of principles and rules, practical work (as opposed to theory), legal procedure, way of doing something, scholarly (especially liberal arts) subject, stratagem, cunning, ruse, practical experience, practical treatise, legal profession, pattern of behaviour, custom, usage, complot, ruse, intrigue, familiarity with a place, fact of often visiting a particular place and its etymon post-classical Latin practice action, practice, active (as opposed to contemplative) life, stratagem from ancient Greek πρακτική practical (as opposed to theoretical) science, use as noun (short for πρακτικὴ ἐπιστήμη practical science (Plato)) of feminine singular of πρακτικός.