(in the past) a tenth of the goods that somebody produced or the money that they earned, that was paid as a tax to support the Church （旧时按固定比例给教会的）什一税 (in some Christian Churches today) a tenth of a person’s income, that they give to the Church （现在某些教友按收入的十分之一给基督教教会的）什一捐献
Word OriginOld English tēotha (adjective in the ordinal sense ‘tenth’, used in a specialized sense as a noun), tēothian (verb).