pro bono publico
Concise Oxford English Dictionary © 2008 Oxford University Press:
pro bono publico /prəʊ ˌbɒnəʊ ˈpʊblɪkəʊ, ˌbəʊnəʊ ˈpʌblɪkəʊ/
▶adverb & adjective
- 1 for the public good.
- 2 (usu. pro bono) chiefly N. Amer. denoting legal work undertaken without charge, especially for a client on low income.
– origin from L.
'pro bono publico' also found in these Oxford entries:

