Source : Webster's Revised Unabridged Dictionary (1913)

Nix \Nix\, n.; fem. {Nixe}. [G. Cf. 1st {Nick}.] (Teut. Myth.)
   One of a class of water spirits, commonly described as of a
   mischievous disposition.

         The treacherous nixes who entice men to a watery death.
                                                  --Tylor.

Source : WordNet®

nix
     n : a quantity of no importance; "it looked like nothing I had
         ever seen before"; "reduced to nil all the work we had
         done"; "we racked up a pathetic goose egg"; "it was all
         for naught"; "I didn't hear zilch about it" [syn: {nothing},
          {nil}, {nada}, {null}, {aught}, {cipher}, {cypher}, {goose
         egg}, {naught}, {zero}, {zilch}, {zip}]