j

I. noun (plural j's or js) Usage: often capitalized, often attributive Date: 15th century 1. a. the 10th letter of the English alphabet b. a speech counterpart of orthographic j 2. a. a graphic device for reproducing the letter j b. a unit vector parallel to the y-axis 3. one designated j especially as the 10th in order or class 4. something shaped like the letter J II. abbreviation 1. jack 2. journal 3. judge; justice