whorl in WordNet English dictionary

1. a structure consisting of something wound in a continuous series of loops
   "a coil of rope"
   coil  spiral  volute  whorl  helix 
   
2. a round shape formed by a series of concentric circles (as formed by leaves or flower petals)
   coil  whorl  roll  curl  curlicue  ringlet  gyre  scroll 
   
3. a strand or cluster of hair
   lock  curl  ringlet  whorl