the washing of ore; an amount of gold mined by washing
washup in American English
(ˈwɑʃˌʌp, ˈwɔʃ-)
noun
1.
an act of washing
Allow five minutes for washup
2.
a place, as a bathroom, for washing
Also: wash-up
Word origin
[1865–70; n. use of v. phrase wash up]This word is first recorded in the period 1865–70. Other words that entered Englishat around the same time include: dunk, figure skating, goulash, racism, tick-tack-toe