You can't focus on studying if you're chatting with someone else, too. So the cell phone is off limits. Turn off the home phone, too, along with the computer (unless you're prepping on it) and any music with vocals. Study music should be lyric-free! Post a sign on your door for people to stay away.
cuirass (plural cuirasses) 1  A piece of defensive armor, covering the body from the neck to the girdle. 2  The breastplate taken by itself.
1. plate armor covering the torso from neck to waist. 2. either of the two plates of a cuirass. 3. any similar covering, as a ship's armor. 4. a hard shell or other covering on an animal forming a defensive shield.