WordNet sense 1 (shaped like a ring):

annular, circinate, circular, annulate, annulated, doughnut-shaped, ring-shaped

WordNet sense 2 (curving and somewhat round in shape rather than jagged):

rounded

WordNet sense 3 (having patterns (especially colorful patterns)):

patterned

WordNet sense 4 (joined in matrimony):

married

WordNet sense 5 (adorned or crowned with a circlet; sometimes used as combining forms):

encircled, wreathed

WordNet sense 6 (provided with something intended to increase its beauty or distinction):

adorned, decorated