The Collaborative International Dictionary of English v.0.48:

Paletot \Pal"e*tot\, n. [F. paletot, OF. palletoc, prob. fr. L.
   palla (see Palla) + F. toque cap, and so lit., a frock with
   a cap or hood; cf. Sp. paletoque.]
   (a) An overcoat. --Dickens.
   (b) A lady's outer garment, -- of varying fashion.
       [1913 Webster]