quincunx

QUIN'CUNX, n. [L. composed of quinque, five, and uncia, ounce.]

In gardening, the quincunx order is a plantation of trees disposed in a square, consisting of five trees, one at each corner and a fifth in the middle, thus :.:; which order repeated indefinitely, forms a regular grove or wood, which viewed by an angle of the square or parallelogram, presents equal or parallel alleys.