compurgator
/ˈkɒmpɜːgeɪtə(r)/noun
- Law, historical a sworn witness to the innocence or good character of an accused person【律】〈史〉宣誓证明被告无罪(或作风正派)的证人; 宣誓断讼法的宣誓证人。
词源
mid 16th cent.: medieval Latin, from Latin com- 'together with'+purgator, from purgare 'purify' (see COMPURGATION).