Conk

head bean nut noodle noggin dome block pate poll noddle

hit blow whack bang crack thwack wallop belt pound clout slug sock swat wham bash biff clip bop lick whop welt paste

hit strike die pass go fail knock slam smash whack clip belt pop swat slug wallop bash sock thwack whop expire decease exit perish faint stall smite biff bop catch clout slog paste straighten swoon pass away wham pass out choke pop off drop-dead snuff-it croak kick-the-bucket give-up-the-ghost buy-the-farm cash in one's chips