- rat poison.
- the trioxide of arsenic.
Origin of ratsbane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ratsbane
If he wears a dagger and ratsbane, it must be to do mischief to himself or somebody else.
Doolittle is a rat, and I will hire somebody to give him ratsbane.The Evil Eye; Or, The Black Spector
Did I think he was so weak as bite holes in his flesh with ratsbane?The Cloister and the Hearth
I counselled him either to give or take an ounce of ratsbane, to cure his mind.A Select Collection of Old English Plays
If his wife and children are not to be made over, he is not to wear a dagger and ratsbane in his pockets.
- rat poison, esp arsenic oxide
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
Word Origin and History for ratsbane
Online Etymology Dictionary, © 2010 Douglas Harper