A percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance
(Noun)
Synonyms:
  1. castanets
  2. clappers
  3. wastepaper
  4. wishbones
  5. ulnae
  6. ivories
  7. tibias
  8. taluses
  9. synostoses
  10. sterna
  11. shins
  12. scapulas
  13. finger-cymbals
  14. sacra
  15. ribs
  16. radiuses
  17. pubes
  18. pelves
  19. patellae
  20. osteogeneses
  21. osar
  22. maxillas
  23. laminas
  24. lamellas
  25. ischia
  26. ilia
  27. humeri
  28. fibulas
  29. femora
  30. crania
  31. coxae
  32. coccyges
  33. cervices
  34. calcanea
  35. astragali
  36. acetabula
  37. mandibles
Rigid connective tissue that makes up the skeleton of vertebrates
(Noun)
Synonyms:
  1. osar
Study intensively, as before an exam
(Verb)
Synonyms:
  1. crams
  2. grinds