片へん務むへんむMeanings1noun, noun which may take the genitive case particle 'no'unilateral; one-sidedLegal term describing an obligation or contract that binds only one party. Often used in phrases like 片務契約 (unilateral contract).片へん務む契けい約やくでは、一いっ方ぽうの当とう事じ者しゃだけが義ぎ務むを負おう。