Mouth Piece, its used as a guard for your teeth.
It is called a regulator. To be specific, the part of the regulator that goes in your mouth is called the second stage of the regulator.
That would be called a ball gag.
The "thing" put into its mouth is called a bit. The entire "thing" that goes on its head is called a bridle.=D
One of the most exotic things I have come across to put in your mouth is called a Delicious Monster. It's a tropical fruit. If you eat it when it's not ripe you get a mouth full of acid. If you eat it when it when it's ripe it is said to smell heavenly and taste like fruit salad. It's also called a Swiss Cheese plant.
The 'claws', called 'palps' are used to carry food into the mouth.
The (often) kinda basket-like thingy used to prevent dogs from biting is called a muzzle.
it is called a gas mask
get some plastic melt it then put it in a mold wait for it to cool than there u go
To put one's foot in one's mouth means to say the wrong thing.
chewing a little bit of food in your mouth than put it in your baby's mouth so he can eat it....this is called tahneek.
mouth* and its God, its the eucharist and is not a symbol but is the body blood soul and divinity of jesus
A Chalice.