oath-helper

• oath helper

From oath +‎ helper, probably a calque of German Eidhelfer (also Eideshelfer), Dutch eedhelper, West Frisian eedhelper.

oath-helper (plural oath-helpers)

1. (Anglo-Saxon, historical) One brought into court to swear to the truth and testify on oath on behalf of the accused, to clear them from suspicion of crime.