Oregon Revised Statutes Evidence and Witnesses § 40.272

(a) “Person with a disability” means a person who cannot readily understand or communicate the spoken English language, or cannot understand proceedings in which the person is involved, because of deafness or because of a physical hearing impairment or cannot communicate in the proceedings because of a physical speaking impairment.

(b) “Sign language interpreter” or “interpreter” means a person who translates conversations or other communications for a person with a disability or translates the statements of a person with a disability.