The story
From slack + line. The verb is a back-formation from slacklining.
Etymology from Wiktionary, CC BY-SA 4.0.
slackline
Today it means: A length of cable, rope, or webbing that hangs loosely from its points of suspension. Full definition →
Today it means: A length of cable, rope, or webbing that hangs loosely from its points of suspension. Full definition →
From slack + line. The verb is a back-formation from slacklining.
Etymology from Wiktionary, CC BY-SA 4.0.