Mass. Gen. Laws ch. 221C § 1
For the purpose of this chapter, the following words shall have the following meanings:
"Certified interpreter", an interpreter who has been duly trained and certified under the direction of the coordinator of interpreter services pursuant to subsection (e) of section seven.
"Interpreter", a person who is readily able to interpret written and spoken language simultaneously and consecutively from English to the language of the non-English speaker or from said language to English.
"Judge", a judge or justice, or a clerk-magistrate when acting in a magisterial capacity, of a trial court department.
"Non-English speaker", a person who cannot speak or understand, or has difficulty in speaking or understanding, the English language, because he uses only or primarily a spoken language other than English.
"Qualified interpreter", a certified interpreter who has also passed the examination and been qualified for interpreting in the federal courts by the United States district court for the district of Massachusetts.
Mass. Gen. Laws ch. 221C, § 1