frostsikker

== Norwegian Bokmål == === Etymology === From frost +‎ sikker. === Adjective === frostsikker (neuter singular frostsikkert, definite singular and plural frostsikre) frostproof == Norwegian Nynorsk == === Etymology === From frost +‎ sikker. === Adjective === frostsikker (neuter singular frostsikkert, definite singular and plural frostsikre) frostproof