1.NounA flexible sleeve made of latex or other impermeable material such as polyurethane or sheepskin, worn over an erect penis during sexual intercourse as a contraceptive or as a way to prevent the spread of STIs during PIV, anal, or oral.
"buy a pack of condoms; flavoured condom; ribbed condoms"
2.NounAny of various forms of flexible sleeve or barrier, variously shaped for either penetrative or receptive body parts, made of latex or other impermeable material such as polyurethane or sheepskin, worn (by anyone with) during sexual activity to prevent pregnancy or the spread of STIs.