pantalet

enUK

pan·ta·let

also pan·ta·lette P0046500 (păn′tə-lĕt′)n. often pantalets or pantalettes1. Long underpants trimmed with ruffles extending below the skirt, worn by women and children in the mid-1800s.2. A frill attached to the leg of underpants.
[From pantaloon.]