WordNet sense 1 (like the pattern basic to the human fingerprint):

looped

WordNet sense 2 (in the shape of a coil):

helical, spiral, volute, coiling, spiraling, turbinate, voluted

WordNet sense 3 (curled or wound (especially in concentric rings or spirals)):

coiled

WordNet sense 4 (forming one or more whorls (especially a whorl of leaves around a stem)):

verticillate, verticillated

WordNet sense 5 (botany; forming a whorl or having parts arranged in a whorl):

cyclic