Synonyms for Whorl:

n.

argyle, arrangement, array, check, articulation, configuration, chronology, arabesque, coloration, column. convolution (noun)
convolution, tortuousness, labyrinth, circuitousness, coil.
roll (noun)
volute.
spiral (noun)
coil, helix, twist, curl.
twirl (noun)
twist.
whorl (noun)
curlicue, coil, lock, helix, scroll, volute, spiral, roll, curl, gyre, ringlet.

Other synonyms:

Other relevant words:
gyre, curl, ringlet, lock, spiral, volute, twist, scroll, curlicue, helix, roll.