Profile drag
Aerodynamic drag produced by skin friction. Profile drag is a form of parasite drag.
Aviation Maintenance Technician Handbook — Airframe, p. G-27
Also defined in 1 more source
Drag incurred from frictional or parasitic resistance of the blades passing through the air. It does not change significantly with the angle of attack of the airfoil section, but it increases moderately as airspeed increases.