any of various compounds that are added to gasoline to reduce engine knocking

any of various compounds that are added to gasoline to reduce engine knocking

declare to be true or admit the existence or reality or truth of

declare to be true or admit the existence or reality or truth of

a person who tills the soil for a living

a United States Air Force defense laboratory responsible for discovering and developing and integrating fighting technologies for aerospace forces

a United States Air Force defense laboratory responsible for discovering and developing and integrating fighting technologies for aerospace forces

brown to black North American bear; smaller and less ferocious than the brown bear

brown to black North American bear; smaller and less ferocious than the brown bear

brown to black North American bear; smaller and less ferocious than the brown bear