also pan·ta·lette  (păn′tə-lĕt′)
n. often pantalets or pantalettes
1. 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.]
References in periodicals archive ?
The "Lace-Ruffled Pantalet Days Quilt," a subscription promotion Lissauer clipped out of a 1933 issue of The Household Magazine, likely influenced the design of several appliques.