Word Origin & History
hatO.E. hæt "hat, head covering," from P.Gmc. *khattuz "hood, cowl" (cf. O.N. hattr), from PIE base *kadh- "cover, protect" (cf. Lith. kudas "tuft or crest of a bird," L. cassis "helmet"). Now, "head covering with a more or less horizontal brim." To throw one's hat in the ring was originally (1847)
EXPANDto take up a challenge in prize-fighting. To eat one's hat was originally To eat Old Rowley's [Charles II's] hat.
COLLAPSE