serve as a/(one's) replacement

serve as a/(one's) replacement

To take the place or fill the purpose of someone or something else. We created these wood pellets from repurposed sawdust to serve as more a ecologically friendly substitute for other fuel sources. This is Shawna, everyone. She's going to be serving as my replacement while I'm on sabbatical.
See also: serve
Farlex Dictionary of Idioms.
See also:
  • serve as a/(one's) substitute
  • substitute
  • mongo
  • get (one's) fill
  • get one's fill
  • fill
  • fill (someone) full of lead
  • fill full of lead
  • fill someone full of lead
  • eat (one's) fill