अर्थ : A radioactive metallic element that is similar to tellurium and bismuth. Occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor.

अर्थ : A noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army.

अर्थ : A European river. Flows into the Adriatic Sea.

अर्थ : An independent agency of the federal government responsible for mail delivery (and sometimes telecommunications) between individuals and businesses in the United States.