How do you spell Tortuous

Available Definitions:
1)  a. - Bent in different directions; wreathed; twisted; winding; as, a tortuous train; a tortuous train; a tortuous leaf or corolla.
2)  a. - Fig.: Deviating from rectitude; indirect; erroneous; deceitful.
3)  a. - Injurious: tortious.
4)  a. - Oblique; -- applied to the six signs of the zodiac (from Capricorn to Gemini) which ascend most rapidly and obliquely.