regnjakkene is the feminine plural definite of regnjakke.

regnjakkeN

Kven

sađetjakkiN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:5931Edit on GitHub Suggest

arvereaddjuN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:84297Edit on GitHub Suggest

Case	Sg	Pl
Indef	regnjakke	regnjakker
Def	regnjakken / regnjakka	regnjakkene