rattletrap
Pronunciation:
noun
Definitions
A mechanical device, particularly an automobile, that is worn out, run down, or mechanically unreliable as indicated by noises it makes in operation.
Example: Mom always worried about our safety in my friend's rattletrap. I told her not to worry, as it can't go fast enough to be dangerous.
Any piece of miscellaneous equipment or junk.
adjective
Definitions
Mechanically unreliable or in disrepair.