Wiktionary
drygulcher
n. (context slang English) In the Wild West, a hired assassin who shoots his targets from a concealed location.
Usage examples of "drygulcher".
There were other less famous draws and a mess of tree groves a drygulcher might have found right handy, and a thoughtful rider had to consider each as he approached, his own saddle gun across his lap.
Bell knew his own shooting well enough to know he had killed the unknown drygulcher who fired from the loft door.