
aboard 
on or into a ship, plane, train, or the like; on board. [1/2 definitions] 
angle^{1} 
the degree to which a line or plane slants with respect to a horizontal or vertical plane. [1/10 definitions] 
B 
in the U.S. military, a plane used to transport and drop bombs, such as a B17 or B52. 
barnstorm 
to perform acts of stunt flying with a small plane, usu. at rural carnivals or fairs. [1/3 definitions] 
bomber 
a military plane used to transport and drop bombs. [1/2 definitions] 
booking 
a reservation for space, as at a hotel or restaurant or on a plane or ship. [1/2 definitions] 
Cartesian coordinates 
a pair of coordinates for locating a point on a plane by its distances from two intersecting, usu. perpendicular lines. [1/2 definitions] 
concave 
a concave line, plane, or structure. [1/3 definitions] 
conic section 
in geometry, a curve, such as an ellipse, hyperbola, or parabola, created by the intersection of a plane and a right circular cone. 
contrail 
a visible trail of moisture condensed into water drops or ice crystals, formed in the wake of a highflying plane or rocket; vapor trail. 
crashland 
to land (an airplane) in an emergency, usu. causing damage to the plane. [1/2 definitions] 
decagon 
in geometry, a tensided plane figure. 
dextrorotation 
rotation or turning of the plane of polarized light to the right. 
dextrorotatory 
of or designating a crystal or compound that turns the plane of polarized light to the right. (Cf. levorotatory.) [1/2 definitions] 
diagonal 
in mathematics, joining two nonadjacent corners of a polygon or two corners of a polyhedron that are not in the same plane. [2/5 definitions] 
dodecahedron 
a threedimensional geometric figure with twelve plane faces. 
ellipse 
a closed geometric plane curve formed by the intersection of a plane at an oblique angle to the axis and opposite sides of a right circular cone; an oval conic section. [1/2 definitions] 
ellipsoid 
a solid geometric figure whose plane sections are all ellipses or circles. [1/2 definitions] 
even 
in the same line or plane; parallel. [1/17 definitions] 
F 
in the U.S. military, a fighter plane, such as an F16. 
ferry 
to transport (people, vehicles, goods, and the like) by boat or plane, esp. across water. [1/6 definitions] 

