tampon

n. absorbent roll of material placed in a wound or body cavity to stop a flow of blood; narrow roll of cotton or other material used to absorb menstrual flow

A tampon is a plug of cotton or other absorbent material inserted into a body cavity or wound to absorb fluid. The most common type in daily use (and the topic of the remainder of this article) is a usually disposable plug that is designed to be inserted into the vagina during menstruation to absorb the flow of blood. The use of these devices has occasionally caused infection and (rarely) death (see Toxic shock syndrome). In the United States, the Food and Drug Administration (FDA) regulates tampons as medical devices.
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Tampon /tam·pon/ [Fr.] a pack, pad, or plug made of cotton, sponge, or other material, variously used in surgery to plug the nose, vagina, etc. [more]Tampon - Community and Resources

Noun
1. plug of cotton or other absorbent material; inserted into wound or body cavity to absorb exuded fluids (especially blood)
(hypernym) plug, stopper, stopple
(hyponym) Tampax
Verb
1. plug with a tampon
(hypernym) plug, stop up, secure
(derivation) tamponade, tamponage

n. tampon, narrow cotton roll used to absorb menstrual flow