Definition of Mitchell, Billy in US English:
Mitchell, Billy
proper nounˈmiCHəlˈmiCHəl
(1879–1936), US army officer; full name William Mitchell ; born in France. An outspoken advocate of air power, he was court-martialed in 1925 for his criticism of the war and navy departments. As a civilian, he continued to preach the importance of air power in warfare.