nose-down1
noun
AeronauticsA descent or loss of height by an aircraft.
Origin
1940s; earliest use found in Tee Emm. From to nose down.
nose-down2
adjective
AeronauticsPerformed with or having the nose directed downwards.
Origin
Early 20th century; earliest use found in Horatio Barber (b. 1875). From to nose down.
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