/tes'teuh moh"nee euhl/ , n.
1. a written declaration certifying to a person's character, conduct, or qualifications, or to the value, excellence, etc., of a thing; a letter or written statement of recommendation.
2. something given or done as an expression of esteem, admiration, or gratitude.
adj.
3. pertaining to or serving as a testimonial: a testimonial dinner for the retiring dean.
[ 1375-1425; late ME testimonialis. See TESTIMONY, -AL 1 ]