A short not necessarily small, in fact quite rotund and flabby, vindictive person ie ex wife who regrets her previous actions and spends the rest of her sad little (quite literally) life trying her hardest to make everyone elses life a misery. Thankfully most people see this person for what they really are and treat them as they would something on the bottom of their shoe.
Poison dwarf = short, fat and unhappy
By Extremely happy person who thanks poison dwarf for all her mistakes
A selfish, untrustworthy, deeply obnoxious or evil person of diminutive size, whose ostensibly unthreatening appearance allows them to fulfil their predisposition for causing unprovoked pain and suffering in an under-hand manner for anyone who has the misfortune to strike-up a friendship them.
When I first met her, I couldn't understand why her ex referred to her as the Poison Dwarf, but after 4 years of marriage, involving such unexplained occurrances as the slashing of her tyres and deliveries of excrement, not to mention the blatent lies about her working late, I think I'm starting to understand.
By Colin
An ex-wife who sends offensive and threatening letters and emails to her former husband and his wife, and has been warned on a number of occassions by the Police for doing so. A bitter and twisted money-grabbing bitch who cannot let go, and wants to be kept in the lifestyle she wants despite having been divorced years ago. Aka red dwarf
I saw your ex-wife stopping around Dingwall. She looked like a bulldog chewing a piss-covered nettle patch. She really is a poison dwarf.
By She is a red dwarf