1. principle a basic generalization that is accepted as true
  2. principal main or most important
  3. principle of relativity (physics) a universal law that states that the laws of mechanics are not affected by a uniform rectilinear motion of the system of coordinates to which they are referred
  4. principle of parsimony the principle that entities should not be multiplied needlessly; the simplest of two competing theories is to be preferred
  5. process printing a method of printing colored reproductions from halftone plates
  6. prince charming a suitor who fulfills the dreams of his beloved
  7. transplanting the act of removing something from one location and introducing it in another location
  8. bronco busting breaking a bronco to saddle
  9. interesting arousing or holding the attention
  10. precipitating bringing on suddenly or abruptly
  11. principality territory ruled by a prince
  12. Principality of Monaco a constitutional monarchy in a tiny enclave on the French Riviera
  13. principal axis a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted
  14. principled based on or demonstrating morality or rightness
  15. inspiriting cheerfully encouraging
  16. reciprocity a relation of mutual dependence or action or influence
  17. principal diagonal the diagonal of a square matrix running from the upper left entry to the lower right entry
  18. principle of equivalence (physics) the principle that an observer has no way of distinguishing whether his laboratory is in a uniform gravitational field or is in an accelerated frame of reference
  19. princeling a petty or insignificant prince who rules some unimportant principality
  20. Prince Peter Kropotkin Russian anarchist (1842-1921)