Sentence:  The cranial bones, or <WSD>cranium</WSD> (kra′ne-um), enclose and protect the fragile brain and furnish attachment sites for head and neck muscles. 
Meaning of the word marked with <WSD> tags:  The braincase or neurocranium; that part of the skull consisting of the bones enclosing the brain, but not including the bones of the face or jaw.