catflap.org Online Dictionary Query

  The sofa had to serve/function as a bed. /ðə sˈəʊfə hadtə sˈɜːv fˈʌŋkʃən az ɐ bˈɛd/
  Das Sofa musste als Bett herhalten.
   see: serve as sth., function as sth., serving, functioning, served, functioned, serve a useful purpose, serve to do sth., function to do sth., His death should serve as a warning to other young people., Sweat serves/functions to cool down the body., Can I help you?, Narratives about the past may serve to maintain memories., Police interrogations serve the purpose of solving crimes.