1. Consisting of wool; as, a woolly covering; a woolly fleece.
2. Resembling wool; of the nature of wool. My fleece of woolly hair.
3. Clothed with wool. Woolly breeders.
4. (Science: botany) Clothed with a fine, curly pubescence resembling wool.
(Science: zoology) Woolly bear, the hairy larva of several species of bombycid moths. The most common species in the united states are the salt–marsh caterpillar (see under Salt), the black and red woolly bear, or larva of the isabella moth, and the yellow woolly bear, or larva of the American ermine moth (Spilosoma Virginica).
(Science: botany) Woolly butt, an extinct rhinoceros (Rhinoceros tichorhinus) which inhabited the arctic regions, and was covered with a dense coat of woolly hair. It has been found frozen in the ice of Siberia, with the flesh and hair well preserved.