seam

noun
1
a line along which two edges of cloth, etc. are joined or sewn together
درز, محل اتصال, خط دوخت, لبه دوخت
2
a thin layer of coal or other material, between layers of rock under the ground
لایه, رگه, درز معدنی, لایه زغالی, رگه زغال
They struck a rich seam of iron ore.
(figurative)The book is a rich seam of information.
3
a line where two edges meet, for example the edges of wooden boards
درز, خط اتصال, لبه اتصال, خط درز
Light was spilling in through the seams of the door.