Definition of splay:
(v) :
to display; to spread; to dislocate, as a shoulder bone
(adj) :
displayed; spread out; turned outward; hence, flat; ungainly; as, splay shoulders
(n) :
a slope or
bevel, especially of the sides of a door or window, by which the opening is made larger at one face of the wall than at the other, or larger at each of the faces than it is between them