CLOFF
Noun
cloff (plural cloffs)
(historical) An allowance of two pounds in every three hundredweight after the tare and tret are subtracted; now used only in a general sense, of small deductions from the original weight.
Source: Wiktionary
Cloff, n. Etym: [Etymol. uncertain.]
Definition: Formerly an allowance of two pounds in every three hundred
weight after the tare and tret are subtracted; now used only in a
general sense, of small deductions from the original weight. [Written
also clough.] McCulloch.
Source: Webster’s Unabridged Dictionary 1913 Edition