We found one dictionary that defines the word beastmistress:

General (1 matching dictionary)

1. beastmistress: Wiktionary

Definitions from Wiktionary (beastmistress) ▸ noun:  A female beastmaster. ▸ Words similar to beastmistress ▸ Usage examples for beastmistress ▸ Idioms related to beastmistress ▸ Wikipedia articles (New!) ▸ Popular adjectives describing beastmistress ▸ Words that often appear near beastmistress ▸ Rhymes of beastmistress ▸ Invented words related to beastmistress