What does the latin word for pro bono mean?

Answer 1

For the [public] good is the English equivalent of 'pro bono [publico]'. In the word by word translation, the preposition 'pro' means 'for'. The neuter gender noun 'bono', in the ablative case as the object of the preposition, means 'the common weal, supreme good'. The adjective 'publico' means 'public'.

Answer 2

"Pro bono" is an abbreviation of the Latin expression 'pro bono publico', meaning 'for the public good'. When lawyers use it, it means 'for free'.