English
lockstitch
From lock + stitch.
Proto-Indo-European *lewg- ‘to bend’
Proto-Germanic *luką
Proto-West Germanic *lok ‘shutter’
Old English loc
Middle English lok
English lock
Proto-Indo-European *(s)teyg- ‘to stab, pierce’
Proto-Germanic *stikiz ‘prick, piercing, stitch’
Proto-West Germanic *stiki ‘prick, puncture’
Old English stiċe ‘a prick, puncture, stab, thrust with a…’
Middle English stiche ‘an acute stabbing sensation’
English stitch
Today it means
noun A stitch made by a sewing machine in which two threads are interlocked.
Language periods are conventional ranges, not dates for this word.
Etymograph / lockstitch