Definition of docken in English:

docken

noun

Scottish
another term for dock (the plant)
‘After thoroughly double-digging my fruit plot before planting, I've discovered a huge docken has just appeared through the thick mulch.’
another term for dock (the plant)
‘He surveyed the grounds with their hen-houses, rust-bound corrugated iron sheds, broken down tractors, potato patches and clothes poles chest high in dockens with full heads of seeds.’

Origin

Late Middle English apparently from Old English doccan, plural of docce (see dock).

Pronunciation

docken

/ˈdɒk(ə)n/