dokos is the item in one’s own eye that must be noticed and removed before addressing a brother’s speck.

Across the supplied verses, the term denotes the item said to be in one’s own eye, contrasted with a brother’s speck and to be removed before attempting to remove the brother’s speck.

1. Item in one’s own eye · dominant

   In Luke 6:41 and Matthew 7:3, the accusative singular form occurs in the contrast between seeing a brother’s speck and not observing the item in one’s own eye. In Luke 6:42 and Matthew 7:5, it is the item to be taken or expelled from one’s own eye before removing the speck from a brother’s eye; Matthew 7:4 uses the nominative singular form in the statement that it is in the speaker’s eye.

   Luke 6:41Luke 6:42Matthew 7:3Matthew 7:4Matthew 7:5

In the Anselm Project Bible: The APB consistently presents the term as “plank” in the eye-and-speck contrast.