I received a letter from my professional liability insurer informing me of changes to my policy in my next policy year. Among them: in the definition of "professional services" "pro bono" services will be replaced with "eleemosynary" services. This is not a typo. It means "relating to or dependent on charity; charitable."
The Oxford English Dictionary explains its origins:
Late 16th century (as a noun denoting a place where alms were distributed): from medieval Latin eleemosynarius, from late Latin eleemosyna ‘alms’, from Greek eleēmosunē ‘compassion’ (see alms).