English

gunloop

From gun + loop.

A compound of gun + loop

Middle English gunne

English gun

Proto-Indo-European *klewb- ‘to spring’

Proto-Germanic *hlaupaną ‘to leap, run’

Old Norse hlaupa ‘to leap’

Old Norse hlaup ‘a run’

Middle English loupe ‘noose, loop’

English loop

Today it means

noun embrasure; arrow loop

Language periods are conventional ranges, not dates for this word.