no ka hoʻololi iki ka huli
[Hawaiian Dictionary (Hawaiʻi)]
puna.lua

n. Formerly, spouses sharing a spouse, as two husbands of a wife, or two wives of a husband; also, wives of brothers, husbands of sisters (no sexual privileges); sister-in-law (Ruta 1.15). Kona punalua, his punalua. Lili punalua, bitter jealousy of a rival. ʻŌpū punalua, evil disposition; hating, malevolent, hateful. hoʻo.puna.lua To attain or have the punalua relationship, to pretend to be a punalua. (PCP punalua.)