Definitions
1.verbTo make unclean, dirty, or impure; soil; befoul.
2.verbTo vandalize or add inappropriate contents to something considered sacred or special; desecrate"To urinate on someone's grave is an example of a way to defile it."
3.verbTo deprive or ruin someone's (sexual) purity or chastity, often not consensually; stain; tarnish; mar; rape"The serial rapist kidnapped and defiled a six-year-old girl."
4.nounA narrow way or passage, e.g. between mountains.
5.nounA single file, such as of soldiers.
6.nounThe act of defilading a fortress, or of raising the exterior works in order to protect the interior.
7.verbTo march in a single file; to file.