a setting, as on a ring, completely enclosing the girdle of the stone.
noun, Nautical. 1. a small winch or crab.
1. variant of before a vowel: gyral.
[jahy-ruh l] /ˈdʒaɪ rəl/ adjective 1. . 2. Anatomy. of or relating to a gyrus. /ˈdʒaɪrəl/ adjective 1. having a circular, spiral, or rotating motion; gyratory 2. (anatomy) of or relating to a convolution (gyrus) of the brain
[jahy-reys, -reyz] /ˈdʒaɪ reɪs, -reɪz/ noun, Biochemistry. 1. a bacterial enzyme that causes supercoiling of DNA.