Term: sonic barrier: the increase in aerodynamic drag as an airplane approaches the speed of sound
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: retrenchment: entrenchment consisting of an additional interior fortification to prolong the defense
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: griminess: the state of being grimy
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: crape myrtle: ornamental shrub from eastern India commonly planted in the southern United States
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: quack: the harsh sound of a duck
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: kiwi: fuzzy brown egg-shaped fruit with slightly tart green flesh
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: certainty: the state of being certain
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: xenicidae: alternative names for the family comprising the New Zealand wrens
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: augustinian hermits: a monastic order of friars established in 1256 by the Pope
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: stemless hymenoxys: perennial having tufted basal leaves and short leafless stalks each bearing a solitary yellow flower head; dry hillsides and plains of west central North America
Broader: drag: the phenomenon of resistance to motion through a fluid | Unrelated: ouija: a board with the alphabet on it; used with a planchette to spell out supernatural messages