What does anfractuosity mean?
The definition of anfractuosity
An*frac`tu*os”i*ty, n.; l. Anfractuosities.
Etym: [Cf. F. anfractuosité.]

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.