cly noun 1verb 1forms 3 noun1 •(slang, no longer used) A person's pocket. verb1 •(slang, no longer used) To seize; to steal.Wapping thou I know does love, / Else the ruffin cly the mort; / From thy stampers then remove, / Thy drawers, and let's prig in sport. — 1707 formsclied · clying · clies