English

lowline

From low + line.

A compound of low + line

Proto-Indo-European *legʰ- ‘to lie’

…

Proto-Germanic *ligjaną ‘to lie’

Proto-Germanic *lēgaz ‘low’

Old Norse lágr

Middle English lāh

English low

Proto-Germanic *līną ‘flax’

Proto-Germanic *līnǭ ‘line’

Proto-West Germanic *līnā ‘line’

Old English līne ‘line’

Middle English line ‘rope’

English line

Today it means

noun A slackline which is mounted close to the ground

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