\Cor"ymb\ (k?r"?mb or -?m; 220), n. [L. corymbus cluster
of flowers, Gr. ????.] (Bot.)
(a) A flat-topped or convex cluster of flowers, each on its
    own footstalk, and arising from different points of a
    common axis, the outermost blossoms expanding first, as
    in the hawthorn.
(b) Any flattish flower cluster, whatever be the order of
    blooming, or a similar shaped cluster of fruit.