tumregel

== Swedish == === Etymology === tumme +‎ regel === Noun === tumregel c a rule of thumb ==== Declension ==== === References === “tumregel”, in Svensk ordbok [Dictionary of Swedish] (in Swedish) “tumregel”, in Svenska Akademiens ordlista [Wordlist of the Swedish Academy] (in Swedish) “tumregel”, in Svenska Akademiens ordbok [Dictionary of the Swedish Academy] (in Swedish)