A person who performs fellatio, typically used in anatomical or clinical contexts.
From fellate (itself from Latin fellare, meaning 'to suck') plus the feminine agent suffix -a, creating a term for a female performer.
This medical/clinical vocabulary emerged in English around the 1890s-1900s as doctors and sexologists created precise language for sexual acts that were previously discussed only in euphemisms or Latin.
Complete word intelligence in one call. Free tier — 50 lookups/day.