plu plew, plue, and (erroneously) plus, the last form being a plural form, used along with plews, plues [< Cdn F < F pelu skin, pelt] Fur Trade, Hist. DCHP-1 (pre-1967)
a prime beaver skin or other fur of equivalent value.
See also: made beaver (def. 1)
a unit of value of one made beaver applied to goods other than furs.