Obs. exc. Hist. Also 5 chastelet. [a. OF. chastelet, mod.F. châtelet, dim. of chastel, château CASTLE: see CASTLET, CASTELLET.] A little castle; the name of an ancient prison in Paris.
1494. Fabyan, VII. 501. The kynge was kept in the castell of Lourre, and the other .ii. in the chastelet.
1523. Ld. Berners, Froiss., I. clvi. 189. Caryed to Parys, and put in prison, in the castell of Loure, and after into the chatelette.
1801. Strutt, Sports & Past., III. iv. 187. The little chatelet at the entrance into Paris.
