grass hearthglossary / GRASS HEARTH grass hearth. Hist. A tenant’s customary service, consisting of the tenant’s bringing his plow to the lord’s land and plowing it for one day. 词条贡献者 译者晓晨,毕业于世界顶级翻译学院,擅长翻译各种与反垄断咨询与合规相关的法律文件。