noun
Usage: usually capitalized B
Etymology: silly (I) + Billy, nickname for William; probably after William IV died 1837, king of England
: a foolish person
noun
Usage: usually capitalized B
Etymology: silly (I) + Billy, nickname for William; probably after William IV died 1837, king of England
: a foolish person
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012