'Ratsbane' definitions:
Definition of 'ratsbane'
(from WordNet)
noun
A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer [syn: arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic, ratsbane]
Definition of 'Ratsbane'
From: GCIDE
- Ratsbane \Rats"bane`\ (r[a^]ts"b[=a]n`), n. [Rat + bane.] Rat poison; white arsenic. [1913 Webster]