For those of you unfamiliar with Tianeptine Sodium, you may know it under the trade name Coaxil across Europe and Asia or as Stablon and Tatinol across Latin America. It is currently approved for medical use in 20 countries.
Duma definition: 1. the legislative assembly of czarist Russia (1905-17) 2. the lower chamber of the parliament in Russia (since 1993)Origin of DumaRussian from Gmc, as in Gothic doms, Old Norse domr, Old English dom, judgment: see doom...
Thus, 'Dum-dum' came to mean a jacketed bullet illicitly or illegally modified to expand. This seems to be the most common current usage of the term - a dum-dum is usually taken to be a bullet which has been modified by the user in order to create greater injury rather than a factory produced hollow-point or soft-point round as might be chosen for hunting or law enforcement purposes.