warranty

Concise Oxford English Dictionary © 2008 Oxford University Press:
warranty/ˈwɒrənti/

▶noun (pl. warranties)

• 1 a written guarantee, issued to the purchaser of an article by its manufacturer, promising to repair or replace it if necessary within a specified period.

• 2 (in an insurance contract) an engagement by the insured party that certain statements are true or that certain conditions shall be fulfilled, the breach of which will invalidate the policy.

– derivatives
warrantee noun,
warrantor noun.

– origin ME (as a legal term denoting a covenant annexed to a conveyance of property, in which the vendor affirmed the security of the title): from Anglo-Norman Fr. warantie, var. of garantie (see guaranty).