1. Concave on one side and convex on the other with the concavity being greater than the convexity

See also: concave

• Trapa
• Trapa bicornis
• Trapa natans
• Trapaceae
• trapdoor
• trapeze
• trapezium
• trapezium bone
• trapezius
• trapezius muscle
• trapezohedron
• trapezoid
• trapezoid bone
• trapezoidal
• trapped
• trapper
• trapper's tea
• trapping
• trappings
• Trappist
• trapshooter
• trapshooting
• trash
• trash barrel
• trash bin