\An*frac`tu*os"i*ty\, n.; pl. {Anfractuosities}.
[Cf. F. anfractuosit['e].]
1. A state of being anfractuous, or full of windings and
   turnings; sinuosity.
         The anfractuosities of his intellect and temper.
                                               --Macaulay.
2. (Anat.) A sinuous depression or sulcus like those
   separating the convolutions of the brain.