dalek

/D AA1 L EH0 K/
noun
  1. 1

    A member of a species of extraterrestrial cyborg mutants who appear in the television programme Doctor Who and are known for travelling in metallic shells, having monotone, mechanically distorted voices, repeating a limited number of phrases, and being bent on exterminating other beings mercilessly.

  2. 2

    One who is dogmatic, unfeeling and determined.

Source: https://en.wiktionary.org/wiki/Dalek, https://en.wiktionary.org/wiki/dalek