tam ‧ pon /ˈtæmpɒn $ -pɑːn/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: French ; Origin: from an unrecorded Old French taper 'to stop up a hole' ]
a tube-shaped mass of cotton or similar material that a woman puts inside her ↑ vagina during her ↑ period (=monthly flow of blood)