an edge tool having two crossed pivoting blades

a skater who uses Rollerblades

Plural form of blade

An aircraft that derives its lift from blades that rotate about an approximately vertical central axis, A flying-machine in which revolving screws or revolving helicoidal surfaces are depended upon to sustain the machine in the air, a winged fruit of certain trees, such as ash, elm, and maple, intransitive & transitive verb_ To go or transport by helicopter,