Source : Webster's Revised Unabridged Dictionary (1913)

Anfractuous \An*frac"tu*ous\, a. [L. anfractuosus, fr. anfractus
   a turning, a winding, fr. the unused anfringere to wind,
   bend; an-, for amb- + fractus, p. p. of frangere to break:
   cf. F. anfractueux.]
   Winding; full of windings and turnings; sinuous; tortuous;
   as, the anfractuous spires of a born. --
   {An*frac"tu*ous*ness}, n.