also anchor, liquid measure in North Sea and Baltic trade, early 14c., from Dutch, related to German Anker, Swedish ankare, Medieval Latin anceria "keg, vat," of unknown origin. That of Rotterdam, once used in England, equaled 10 old wine or 8.5 imperial gallons.
Examples from the Web for anker
I have an anker newly come, which never paid the King a groat.'
What say ye if we run back with a fair wind and broach that anker of Nants?'
Then Anker repeated his visit, and had something else to show.
From time to time the crazy Anker would come to ask after Master Andres.
The pitiful thing about Anker was that he was such a good craftsman.