Native German:
1) from a masculine personal beginning with the ancient Germanic element hild ‘strife/battle’.
2) German: habitational name for someone from Hille (Westphalia).
3) Ashkenazi (Germanized Hebrew): "to flash" or "to boast" or "to praise" הָלַל (halal, halel, helel), later meaning in Germanized form: a person with fair hair or complexion. Yiddish variant: hel.
English:
1) A topographic name from Middle English hiller heller huller ‘dweller on the hill’ (compare Hilling). Where the suffix -er is added to a topographic term is mainly found in southern England especially in Hampshire Sussex and Surrey.
Norweigan, Icelandic:
1) Phoenetically similar to and possibly from the Norwegian or Icelandic "hallr", meaning, "flint."