puñetazo
/puɲeˈtaθo/ · B2 · noun · m
fist
👊 puño (fist) + -etazo (a blow) = a blow with the fist
Puño comes from Latin pugnus, fist, the same root as English pugnacious and pugilist. The suffix -azo turns a thing into a hit with it: codazo is a blow with the elbow, and puñetazo is a blow with the fist.