jarnnatt

• jernnatt

Equivalent to jarn (“iron”) +‎ natt (“night”). The first part is likely from Old Norse hjarn n, from Proto-Germanic *herzną.

• IPA^(key): [²jɑːˌɳɑtː]

jarnnatt f (definite singular jarnnatta, indefinite plural jarnnetter, definite plural jarnnettene)

1. frosty night towards the end of August
   • 1923 August 25, “Ola Mæla”, in Møre, page 2:

     Han brann liksom upp i feberen, og folna so ei hektisk rose, som fekk jarnnatti paa seg.

     He kind of burned up in the fever, and the foal saw a hectic rose, which got an “iron night” on him.

   • 1927, K. M. Elda, Frå Orkladalen: sogor, segner og hermo, volume 2, page 40:

     Dei la seg etter å dyrka korn, men jorda var mager, og nattefrosten i jarnnæterne var drepande for avlingane.

     They went to cultivate grain, but the soil was meager, and the night frost in the "iron nights" was deadly to the crops.

• jernnatt (Bokmål)

• “jarnnatt” in The Nynorsk Dictionary.