See paisa in American Heritage Dictionary 4
noun pl. pai·se (-sāˈ) or paisa
Origin:
Origin: Hindi paisā
Origin: , from Sanskrit *padāṁśaḥ, quarter part
Origin: : padam, foot, quarter (of a verse); see ped- in Indo-European roots
Origin: + aṁśaḥ, portion; see nek-2 in Indo-European roots
.