Etymology
Borrowed from Massachusett wampompeage (“string of white beads used as money”), from wamp, wap, wompi (“white”) + *umpe (“string”) + -ag (plural suffix).
Compare peag (“string of white beads used as money”), also a clipping of wampumpeag.
Cognates
Penobscot wʌ̃pʌ̃pəyak (singular wʌ̃pʌ̃pi)