Gyrus

jilus, n. pi. -ki, (Anat.) A convolution of the brain. [L.; Gr. guros, a ring, circle, also (adj.) round; L. gyrare, -ratum, to turn round.] —Gyre, jir, n. A circular motion, or circle described bv a moving body. — Gy'ral, a. Moving in a circular path; whirling; gyratory. (Med.) Pert, to a gyrus. — Gy'rate, -rat, v. 1 o revolve round a central point, move spirally. — Gyra'tion, n. Act of turning or whirling around a fixed center; a circular or spiral motion; rotation.— Gy'ratory, -to-rT, a. Moving in a circle, or spirally.— Gyrlalcon, jerlaw-kn, n. A falcon from the far north, bolder and stronger than the peregrine or common European falcon. [OF. gerfault, gerfalco, LL. gerofalco, gyrofalco, a falcon (falco) which circles before descending on its prey; prob. not fr.G. geier, a vulture, fr. L.gyrare.] —GyT'omancy, jir'o-man'si, n. A kind of divination performed by walking in or around a circle. [Gr. manteia, divination.]— Gyloscope, -skop, n. A rotating wheel mounted in a ring or rings, illustrating the dynamics of rotating bodies, composition of rotations, etc. [Gr. skopein, to view.]