Definition:Equivocation

Definition
An equivocation is a shift in meaning of an ambiguous term.

If an argument's persuasive force depends on utilizing an equivocation it is fallacious.

To make such an argument is to commit the fallacy of equivocation.

Examples
Attributed to Raymond Smullyan:


 * Some cars rattle.
 * My car is some car.
 * Therefore, my car rattles.