quincunx
‘an arrangement by fives’
Lexical development traced from Tamil root:
E. quincunce, quinquonce < Lat. quinque ‘five’ + uncia ‘ounce; a twelfth part (of anything)’ < unus ‘one’ < kvin < penkwe- < Tamil aintu
quincunx
English words derived from Tamil aintu connoting ‘the number five’