The Oxford Thesaurus An A-Z Dictionary of Synonyms - seamn.

1) junction, juncture, joint, suture, Technical commissure; scar, ridge, line, cicatrix: It is easy enough to see the seam where the parts meet. 2) lode, vein, stratum, bed, layer, thickness: The miners have been working on a new seam discovered at the end of Tunnel 4.