noun which may take the genitive case particle 'no'
seamless; jointless; one-piece
Describes something made without visible joins or seams, often used for clothing, pipes, or abstract continuity.
このパイプは継ぎ目なしで作られている。
This pipe is made seamless.
継ぎ目なしのストッキングは履き心地がいい。
Seamless stockings are comfortable to wear.
Compound of 継ぎ目 (つぎめ, 'joint, seam') + なし ('without'). The spelling 継ぎ目なし is the most common representation.