To stitch or sew something in place; to fasten by sewing (e.g., sewing on a button or securing fabric so it doesn't slip).
ボタンが取れないようにしっかり縫い留めておいた。
I sewed the button on firmly so it wouldn't come off.
裏地がずれないように、所々を縫い留めてください。
Please stitch the lining in several spots so it doesn't shift.
破れた端を布で縫い留めて補修した。
I repaired the torn edge by sewing it down with fabric.