warrant

noun

1.
a writ from a court commanding police to perform specified acts
2.
a type of security issued by a corporation (usually together with a bond or preferred stock) that gives the holder the right to purchase a certain amount of common stock at a stated price
stock-purchase warrant stock warrant
3.
4.
a written assurance that some product or service will be provided or will meet certain specifications
guarantee warrantee warranty
Derived from:
warrant