Source : Webster's Revised Unabridged Dictionary (1913)

Paducahs \Pa*du"cahs\ (p[.a]*d[=u]"k[.a]z), n. pl.; sing.
   {Paducah} (-k[.a]). (Ethnol.)
   See {Comanches}.

Source : WordNet®

Paducah
     n : a town in western Kentucky on the Ohio River