Usage patterns
〈物〉の継ぎ目the joint/seam of something
Water is leaking from the joint in the pipe.
継ぎ目が見えるthe seam is visible
The seam in the wallpaper is showing.
継ぎ目を溶接するto weld the joint
They carefully welded the joint of the steel frame.
継ぎ目がほつれるthe seam comes undone/unravels
The seam of the shirt has started to come undone.