[n] a shade of white the color of bleached bones
[n] the porous calcified substance from which bones are made
[v] remove the bones from (an animal)
[v] study intensively, as before an exam; "I had to bone up on my Latin verbs before the final exam"
bone up, cram, debone, drum, get up, grind away, ivory, mug up, off-white, os, osseous tissue, pearl, swot, swot up