noun
overlock sewing machine; serger
A sewing machine that trims and finishes edges in one step. Wasei-eigo from English 'lock machine'.
wasei-eigo (Japanese-coined English), from lock machine
ロックミシンで布の端を始末する。
I finish the fabric edges with an overlock sewing machine.
Variant with interpunct, sometimes seen in product names or emphasis.
Generic sewing machine; ロックミシン is a specific type for overlocking.
Wasei-eigo from English 'lock machine', referring to the overlock stitch function.