木き裏うら

noun

inner side of a board; core side of sawn timber

Technical term in woodworking and carpentry; refers to the side of a board that was closer to the center of the log. Contrasts with 木表 (きおもて), the outer side.

See also: 木表

• 板いたの木き裏うらは反そりやすいので、使つかい方かたに注ちゅう意いが必ひつ要ようだ。

  The inner side of a board tends to warp easily, so care is needed in how it is used.

• 木き裏うらと木き表おもてを見み分わけるには、年ねん輪りんの向むきを確かく認にんします。

  To tell the inner side from the outer side of a board, check the direction of the annual rings.