feet
A monocle is something who wear on your eyeTherefore, the answer is eye
A monocle is worn in front of one eye, as it is like a singular glass piece
In front of an eye.
A monocle would normally be worn in front of one eye, held in place by the bone around the eyesocket. FIY, a monocle is a single lens without a frame but attached to a string and used for reading.
No. A barnacle is a type of crustacean; a monocle is a type of reading lens.
If you could not be fitted for an artificial eye due to eyelid damage you would wear a patch and a monocle would fit better for reading rather than dealing with glasses.
On your face
Of course! They can also wear barets and summon unicorns.
If a person has blurry vision in one eye a monocle can improve it. Although the monocle was replaced with the contact lens.
Around your waist
The head because it is a hat.
On your head. It's a hat.