n 1  :  a sheath commonly of rubber worn over the penis (as to prevent conception or venereal infection during coitus) - called also sheath   2  :  a device inserted into the vagina that is similar to a condom .
 
 also   
 
Similar sounding terms:  co·nid·i·um  go·ni·ot·o·my  quan·tum  qui·ne·tum 
 
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