binding thread; basting thread
Thread used for sewing book bindings or for temporary basting stitches in tailoring.
Binding thread is essential for Japanese-style bookbinding.
仮縫いに綴じ糸を使う。
Use basting thread for temporary stitching.
Standard spelling with regular okurigana.
Irregular okurigana variant; less common but attested.
Compound of 綴じ (とじ, continuative form of 綴じる 'to bind') + 糸 (いと 'thread').