1. black lung disease lung disease caused by inhaling coal dust
  2. scalene muscle any of four pairs of muscles extending from the cervical vertebrae to the second rib; involved in moving the neck and in breathing
  3. gluteal muscle any one of three large skeletal muscles that form the buttock and move the thigh
  4. skeletal muscle a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes
  5. pectoral muscle either of two large muscles of the chest
  6. black-legged tick parasitic on mice of genus Peromyscus and bites humans
  7. buccinator muscle a muscle that flattens the cheek and retracts the angle of the mouth
  8. alkaline-earth metal any of the bivalent metals of group II of the periodic table
  9. Frankliniella fusca injurious to growing tobacco and peanuts
  10. black music music created by African-American musicians
  11. black-billed cuckoo North American cuckoo; builds a nest and rears its own young
  12. black walnut tree North American walnut tree with hard dark wood and edible nut
  13. pearly-shelled mussel the pearly lining of the dark shells is a source of mother-of-pearl
  14. penultimate next to the last
  15. black walnut North American walnut tree with hard dark wood and edible nut
  16. abdominal muscle the muscles of the abdomen
  17. black lung lung disease caused by inhaling coal dust
  18. anconeous muscle the muscle that extends the forearm and abducts the ulna in pronation of the wrist
  19. involuntary muscle a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)
  20. Black September a Palestinian international terrorist organization that split from the PLO in 1974; has conducted terrorist attacks in 20 countries