Squirt is a synonym of syringe. See how many KS3 words you can spell beginning at sy.
"I started by looking everything up in a Star Trek dictionary so I knew what I was talking about, but you can't do that because they talk in circles, and half of it doesn't make sense, so you'll just end up driving yourself more insane." - Jeri Ryan.
How often do you use a dictionary? You probably have a good collection of dictionaries at school; perhaps you even have a hard copy of the dictionary at home.