Word	I have never seen this before	I have seen this word before	Write the sentence the word is used	I think this word means…..	Expert definition….
Parasites	I have never seen this before		But head lice are parasites and parasites live off other creatures and give nothing in return.	Something very nasty and a pest.	an organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense.
Thorax	I have never seen this before		Like all  insects head lice have six legs attached to the thorax.	Something that insects door or have.	the part of the body of a mammal between the neck and the abdomen, including the cavity enclosed by the ribs, breastbone, and dorsal vertebrae, and containing the chief organs of circulation and respiration; the chest.
Saliva	I have seen this word before		A louse uses these parts to pick a person's skin and then to add saliva to the blood before it feeds.	Water out of your mouth	watery liquid secreted into the mouth by glands, providing lubrication for chewing and swallowing, and aiding digestion.
Tombs	I have never seen this before		They have even being found buried in the tombs of egyptian mummies.	I have NO idea	a large vault, typically an underground one, for burying the dead.