Dictionary.com
definitions

Jerusalem oak

noun
  1. feather geranium.

Origin of Jerusalem oak

First recorded in 1750–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for jerusalem oak

Jerusalem oak

noun
  1. a weedy North American chenopodiaceous plant, Chenopodium botrys, that has lobed leaves and smells of turpentine
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