Any kind of teaching, written or spoken, handed down from generation to generation. In Mark 7:3,9,13, Colossians 2:8, this word refers to the arbitrary interpretations of the Jews. In 2 Thessalonians 2:15; 3:6, it is used in a good sense. Peter (1 Peter 1:18) uses this word with reference to the degenerate Judaism of the "strangers scattered" whom he addresses (Compare Acts 15:10; Matthew 15:2-6; Galatians 1:14).
Easton, Matthew George. "Entry for 'Tradition'". "Easton's Bible Dictionary".