seam

(noun) joint consisting of a line formed by joining two pieces.

(noun) a slight depression in the smoothness of a surface. Synonyms: wrinkle, furrow, crease, crinkle, line. Examples: "His face has many lines." "Ironing gets rid of most wrinkles."

(noun) a stratum of ore or coal thick enough to be mined with profit. Synonyms: bed. Example: "He worked in the coal beds."

(verb) put together with a seam. Example: "Seam a dress."