Source : Webster's Revised Unabridged Dictionary (1913)

Dike \Dike\, v. t. [imp. & p. p. {Diked}; p. pr. & vb. n.
   {Diking}.] [OE. diken, dichen, AS. d[=i]cian to dike. See
   {Dike}.]
   1. To surround or protect with a dike or dry bank; to secure
      with a bank.

   2. To drain by a dike or ditch.

Dike \Dike\, v. i.
   To work as a ditcher; to dig. [Obs.]

         He would thresh and thereto dike and delve. --Chaucer.

Dike \Dike\, n. [OE. dic, dike, diche, ditch, AS. d?c dike,
   ditch; akin to D. dijk dike, G. deich, and prob. teich pond,
   Icel. d?ki dike, ditch, Dan. dige; perh. akin to Gr. ? (for
   ?) wall, and even E. dough; or perh. to Gr. ? pool, marsh.
   Cf. {Ditch}.]
   1. A ditch; a channel for water made by digging.

            Little channels or dikes cut to every bed. --Ray.

   2. An embankment to prevent inundations; a levee.

            Dikes that the hands of the farmers had raised . . .
            Shut out the turbulent tides.         --Longfellow.

   3. A wall of turf or stone. [Scot.]

   4. (Geol.) A wall-like mass of mineral matter, usually an
      intrusion of igneous rocks, filling up rents or fissures
      in the original strata.

Source : WordNet®

dike
     n 1: offensive terms for a lesbian who is noticeably masculine
          [syn: {butch}, {dyke}]
     2: a barrier constructed to contain the flow of water or to
        keep out the sea [syn: {dam}, {dyke}, {levee}]
     v : enclose with a dike; "dike the land to protect it from
         water" [syn: {dyke}]

Source : Free On-Line Dictionary of Computing

dike
     
        To remove or disable a portion of something, as a wire from a
        computer or a subroutine from a program.  A standard slogan is
        "When in doubt, dike it out".  (The implication is that it is
        usually more effective to attack software problems by reducing
        complexity than by increasing it.)  The word "dikes" is widely
        used among mechanics and engineers to mean "diagonal cutters",
        especially the heavy-duty metal-cutting version, but may also
        refer to a kind of wire-cutters used by electronics
        technicians.  To "dike something out" means to use such
        cutters to remove something.  Indeed, the TMRC Dictionary
        defined dike as "to attack with dikes".  Among hackers this
        term has been metaphorically extended to informational objects
        such as sections of code.
     
        [{Jargon File}]