Reference  n. 1 referring of a matter for decision or settlement or consideration to some authority. 2 scope given to this authority. 3 (foll. By to) a relation, respect, or correspondence. B allusion. C direction to a book etc. (or a passage in it) where information may be found. D book or passage so cited. 4 act of looking up a passage etc., or referring to a book or person for information. 5 a written testimonial supporting an applicant for employment etc. B person giving this.  with (or in) reference to regarding; as regards; about.  referential adj.