[n] joint consisting of a line formed by joining two pieces
[n] a stratum of ore or coal thick enough to be mined with profit; "he worked in the coal beds"
[n] a slight depression in the smoothness of a surface; "his face has many lines"; "ironing gets rid of most wrinkles"
[v] join with a seam
[v] put together with a seam; "seam a dress"