lock seam

noun

a joint between two pieces of sheet metal, made by folding up the overlapping edges against each other, then folding them over in the same direction a number of times.

Origin of lock seam

First recorded in 1955–60

Words nearby lock seam

lock in, lock nut, lock on to, lock out, lock rail, lock seam, lock stitch, lock the barn door after the horse has bolted, lock up, lock washer, lock, stock, and barrel