The Japanese suffix '路 (ろ)' means 'road' or 'path'. It is often used in compound words to denote a route, way, or passage. This suffix is commonly found in place names or terms related to travel and direction. For example: mountain road「山道」(やまみち). This suffix can also imply a metaphorical path or journey, as in the path of life「人生の路」(じんせいのみち). It is important to note that '路' is typically used in formal or literary contexts and is less common in everyday conversation.