ventman noun2 •A homeless person who stays in front of a vent to keep warm.[…] a ventman appears, palm outstretched. So this is where they come from, Ruineux thinks, sizing up the sooty apparition. — 2002 •An artilleryman with charge of the touch hole.1st ventman steps up to the breech, passing the tube or primer into the left hand; he pricks with the right, and enters the tube or primer with the left hand, then places the left hand flat upon it — 1852 formsventmen