shaped like an acorn
(of a leaf shape) narrowly triangular, wider at the apex and tapering toward the base
shaped like a brick
shaped like a sword blade
shaped like a dish or pan
shaped like a cube
having a concave shape like an urn
resembling a box in rectangularity
shaped to fit by or as if by altering the contours of a pliable mass (as by work or effort)
fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base
