In rifle shooting “point blank range” is generally taken to be the maximum range at which a shot can be taken using the sight setting without adjusting or allowing up or down for drop.
It is dependent on calibre, quarry and kill zone size.
Taking plus or minus 1 1/2 inches deviation above or below line of sight as acceptable this gives .22 Long Rifle a point blank range of about 60 yards, and most deer rifles a point blank range of 225 yards or thereabouts,
Finally! Yes, that is the definition of point blank range. Exactly how the etymology of that shakes out, but that is the proper definition, as used in things like the ballistic software (c.f. jbmballistics.com).