Noun: screw propeller skroo pru'pe-lu(r)- A propeller with several angled blades that rotates to push against water or air
"The ship's screw propeller churned the water as it moved forward";
- screw
Derived forms: screw propellers
Type of: propeller, propellor
Part of: outboard, outboard motor, ship
Encyclopedia: Screw propeller