Quincunx

Part of speech: noun (n.)

1. An arrangement of things by fives in a square or a rectangle, one being placed at each corner and one in the middle; especially, such an arrangement of trees repeated indefinitely, so as to form a regular group with rows running in various directions.

2. The position of planets when distant from each other five signs, or 150º. Hutton.

3. A quincuncial arrangement, as of the parts of a flower in æstivation. See Quincuncial, 2.