This adverb means 'farther' or 'forward' and appears in various Greek dialects with forms like πρόσω, πρόσσω, πόρσω, and πόρρω. It primarily indicates spatial motion forward or onward, as in leading armies forward or driving horses ahead. The word also carries temporal extensions, referring to things that are further ahead in time. Classical authors used it with verbs of motion to emphasize progression or advancement toward a goal or destination.