tongue and groove joint
A woodworking joint where a protruding tongue on one board fits into a groove on another. Used in flooring, paneling, and traditional Japanese architecture.
These floorboards are joined with a tongue and groove joint.
Using boards with tongue and groove processing makes gaps less likely to appear.
Usually written in kana; the kanji form 実矧ぎ is rare and may not be widely recognized.
Kanji spelling; rarely used in practice.
Compound of さね (tongue of a joint) and はぎ (joining boards edge-to-edge). The kanji 実 (fruit, seed) is used phonetically for さね, and 矧ぐ means to join boards.