A dowry was the transfer of money or other property upon marriage, traditionally by the bride's family to the groom or his family.
Before he was due to marry Stella Grimes, Harry Mudd absconded with the dowry provided by her father, the Baron Grimes. (DIS: "Magic to Make the Sanest Man Go Mad")
Kelis wrote a play to avert a war over a dowry payment. (VOY: "Muse")