bellatrice means A female warrior. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Why “bellatrice” is a great word
BELLATRICE — [Noun] A female warrior. From Latin bellatrix, bellatricis ("female warrior"), from bellare ("to wage war"). Unlike "warrior" (a broad, gender-neutral term for any combatant) or "amazon" (a mythical archetype implying a separate, legendary society), a bellatrice is defined solely by the stark reality of her vocation. She is the glint of sunlight on a spear held in a steady, calloused hand; the grim focus of the last defender at the gate; the weary hand that wipes blood from a blade as a tool—a correction to the grammar of battle, written in the indelible ink of presence.
Etymology
From Latin bellatrix, assumably through French.