1 laziness or indolence; reluctance to make an effort.
2 any slow-moving nocturnal mammal of the family Bradypodidae or Megalonychidae of S. America, having long limbs and hooked claws for hanging upside down from branches of trees.
Phrases and idioms:
sloth bear a large-lipped black shaggy bear, Melursus ursinus, of India.
Etymology: ME f. SLOW + -TH(2)
Useful english dictionary. 2012.