US lawWashingtonRegulationsTitle 192 — EMPLOYMENT SECURITY DEPARTMENTChapter 192-500 — DEFINITIONS192-500-190WAC 192-500-190WAC 192-500-190. SiblingLast amended: 2021Year: 2026Length: 19 wordsOfficial source "Sibling" means an individual who shares at least one parent, as defined by RCW 50A.05.010 , with another individual.PreviousWAC 192-500-185NextWAC 192-500-195