whorl
whorl \'hwo.r(*)l, 'wo.r(*)l, '(h)w*r(-*)l\ n [ME wharle, whorle, prob. alter. of whirle, fr. whirlen] to whirl 1: a drum-shaped section on the lower part of a spindle in spinning or weav ing machinery serving as a pulley for the tape drive that rotates the spindle 2: an arrangement of similar anatomical parts (as leaves) in a circle aroun d a point on an axis 3: something that whirls, coils, or spirals or whose form suggests such mov ement 4: one of the turns of a univalve shell 5: a fingerprint in which the central papillary ridges turn through at leas t one complete circle
Webster's English Dictionary