condom

1. A flexible sheath, usually made of latex or polyurethane, designed to cover the penis during sexualintercourse for contraceptive purposes or as a means of preventing sexually transmitted diseases.

2. A similar device, consisting of a loose-fitting polyurethane or synthetic rubber sheath closed at oneend, that is inserted into the vagina before sexual intercourse. Also called female condom.

Definition: TheFreeDictionary.com