(obsolete, in the plural) Short trousers for men, or more usually boys.
(usually in the plural, or in compounds) An article of clothing worn as underpants by women.
1952 October 13, Advertisement, Life, page 13,
For, unlike old-fashioned diapers, PLAYTEX Dryper confines all wetness to the panty area; brings your baby a whole new world of comfort plus cleaner, finer protection.
2003, Glamour, Volume 101, Issues 4-6, page number unknown,
“One time I was going to run and change before a concert because I realized I had panty lines showing,” says Britta Phillips, […] .