This proper noun designates Achaicus, a Christian mentioned by Paul in 1 Corinthians 16:17 alongside Stephanas and Fortunatus. These three men came from Corinth to visit Paul, supplying what was lacking and refreshing his spirit. The name likely indicates either origin from Achaia (the Roman province including Corinth) or servile status (slaves were often named after their place of origin). Paul's gratitude for Achaicus and his companions underscores the importance of face-to-face fellowship and the encouragement of loyal co-laborers who bridge distances to strengthen apostolic bonds.