Warranty n. : A covenant real, whereby the grantor of an estate of freehold and his heirs were bound to warrant and defend the title, and, in case of eviction by title paramount, to yield other lands of equal value in recompense. This warranty has long singe become obsolete, and its place supplied by personal covenants for title. Among these is the covenant of warranty, which runs with the land, and is in the nature of a real covenant.

Warranty n. : An engagement or undertaking, express or implied, that a certain fact regarding the subject of a contract is, or shall be, as it is expressly or impliedly declared or promised to be. In sales of goods by persons in possession, there is an implied warranty of title, but, as to the quality of goods, the rule of every sale is, Caveat emptor.

Warranty n. : A stipulation or engagement by a party insured, that certain things, relating to the subject of insurance, or affecting the risk, exist, or shall exist, or have been done, or shall be done. These warranties, when express, should appear in the policy; but there are certain implied warranties.

Warranty n. : Justificatory mandate or precept; authority; warrant.

Warranty n. : Security; warrant; guaranty.

Warranty v. t. : To warrant; to guarantee.

Example:
What is the xbox360 Warranty period after a replacement?

Taxonomy
warranty, product, seller, buyer, replacement, representations, extended warranty, the goods, remedies, breach of warranty, assurance, implied warranty, express warranty, defects, consumers, refund, vehicle, fails.

Defination from the web:
warranty is an obligation or guarantee that an article or service sold is as factually stated or ... It is often given in the form of a specific, written "Warranty" document. ...