Definition of slackline in US English:

slackline

noun

  • A strip of webbing that is fixed above the ground but not stretched tight, used to balance on in the sport of slacklining.

    ‘the stunt saw her balance on a slackline between two trucks driving at full speed’

verb

[no object]
  • Balance on a strip of webbing that is fixed above the ground but not stretched tight.

    ‘I like to slackline barefoot’
    ‘he slacklined over a waterfall in Switzerland’

Pronunciation

slackline

/ˈslækˌlaɪn//ˈslakˌlīn/