1. To extremes
   "he went overboard to please his in-laws" 
2. From on board a vessel into the water
   "they dropped their garbage overboard"

Encyclopedia: Overboard

• Louis the German
• Louis the Great
• Louis the Pious
• Louis the Quarreller
• Louis the Stammerer
• Louis the Wideawake
• Louis Untermeyer
• Louis V
• Louis VI
• Louis Victor de Broglie
• Louis VII
• Louis VIII
• Louis X
• Louis XI
• Louis XII
• Louis XIII
• Louis XIV
• Louis XV
• Louis XVI
• Louis-Hector Berlioz
• Louisa May Alcott
• Louise Nevelson
• Louisiana
• Louisiana Purchase
• Louisianan