Definition of concaved:
(adj) :
Curved like the inner surface of a sphere or bowl.
(adj) :
(geometry, not comparable, of a polygon) Not convex; having at least one internal angle greater than 180 degrees.
(adj) :
(functional analysis, not comparable, of a real-valued function on the reals) Satisfying the property that all segments connecting two points on the function's graph lie below the function.
(n) :
A concave surface or curve.
(adj) :
Hollow; empty.
(n) :
(surfing) An indentation running along the base of a surfboard, intended to increase lift.