The breadth of the ship astern from the tuck upwards: it is terminated by the counter above, by the bilge below, by the stern-post in the middle, and by the quarter on the side. That part abaft the after body, which is bounded by the fashion pieces, and by the wing transom, and the upper or second water-line. A ship is said to have a broad, or narrow, buttock according to her transom convexity under the stern.