We found one dictionary that defines the word cold as a witch's teat:

General (1 matching dictionary)

1. cold as a witch's teat: Wiktionary

Definitions from Wiktionary (cold as a witch's teat) ▸ adjective:  Synonym of cold as a witch's tit ▸ Words similar to cold as a witch's teat ▸ Usage examples for cold as a witch's teat ▸ Idioms related to cold as a witch's teat ▸ Wikipedia articles (New!) ▸ Popular nouns described by cold as a witch's teat ▸ Words that often appear near cold as a witch's teat ▸ Rhymes of cold as a witch's teat ▸ Invented words related to cold as a witch's teat