Answer: quincunx

AnswerCrossword Clue
quincunxarrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle
quincunxan arrangement of five things
quincunxan arrangement of five objects in a square or rectangle, one at each corner and one in the middle.
quincunxoverlapping arrangement of five petals or leaves, in which two are interior, two are exterior, and one is partly interior and partly exterior