Bone Shear

shear
A strain in the structure of a substance produced by pressure, when its layers are laterally shifted in relation to each other
cut with shears; "shear hedges"
fleece: shear the wool from; "shear sheep"
(physics) a deformation of an object in which parallel planes remain parallel but are shifted in a direction parallel to themselves; "the shear changed the quadrilateral into a parallelogram"

bone
Study (a subject) intensively, often in preparation for something
Remove the bones from (meat or fish)
(of a man) Have sexual intercourse with (someone)
consisting of or made up of bone; "a bony substance"; "the bony framework of the body"
rigid connective tissue that makes up the skeleton of vertebrates
cram: study intensively, as before an exam; "I had to bone up on my Latin verbs before the final exam"