D defs.my
Entry 1 sense Webster, 1913

Gyrus

/(jī"rŭs)/ · Gy·rus · IPA /ˈd͡ʒaɪɹəs/
01 n. A convoluted ridge between grooves; a convolution; as, the gyri of the brain; the gyri of brain coral. See Brain.
pl. Gyri ((jī"rī))
  1. 1.
    A convoluted ridge between grooves; a convolution; as, the gyri of the brain; the gyri of brain coral. See Brain. See: Brain