Sans-culotte, n.

(sŏng-ku-lŏt'), n. [Fr., without breeches.]

1. A fellow without breeches; a ragged fellow; — a name of reproach given in the first French revolution to the extreme republican party, who rejected breeches as an emblem or badge peculiar to the upper classes or aristocracy.
2. Hence, an extreme or radical republican; a violent revolutionist; a Jacobin.