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kilderkin

American  
[kil-der-kin] / ˈkɪl dər kɪn /

noun

  1. a unit of capacity, usually equal to half a barrel or two firkins.

  2. an English unit of capacity, equal to 18 imperial gallons (82 liters).


kilderkin British  
/ ˈkɪldəkɪn /

noun

  1. an obsolete unit of liquid capacity equal to 16 or 18 Imperial gallons or of dry capacity equal to 16 or 18 wine gallons

  2. a cask capable of holding a kilderkin

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of kilderkin

1350–1400; Middle English, dissimilated variant of kinderkin < Middle Dutch, equivalent to kinder (≪ Arabic qinṭār quintal ) + -kin -kin