noun
Refers to a cut-out portion or a notch in a physical object, such as in woodworking, metalworking, or mechanical parts.
この部品には切り欠きが必要です。
This part requires a notch.
板に切り欠きを入れて組み立てる。
Assemble by making cutouts in the board.
Compound of 切り (kiri, continuative form of 切る 'to cut') and 欠き (kaki, continuative form of 欠く 'to lack, to chip'), literally 'cutting and chipping'.