Sentence:  I had lain, therefore, all that time, cheek by <WSD>jowl</WSD> with Blackbeard himself, with only a thin shell of tinder wood to keep him from me, and now had thrust my hand into his coffin and plucked away his beard. 
Meaning of the word marked with <WSD> tags:  the jaw, jawbone; especially one of the lateral parts of the mandible.