grass widow noun 1.chiefly dialect a.: a discarded mistress or common-law wife b.: a woman who has had an illegitimate child 2. a.: a woman divorced or separated from her husband b.: a woman whose husband is temporarily away from her • grass·wid·ow·hood\(ˈ) ̷ ̷ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\noun