What is drukken?

Some articles on drukken:

Robert Burns And The Eglinton Estate - Irvine and The Drukken Steps - The Route of The Old Toll Road
... the old Long Drive The old 1774 Toll Road looking towards the Drukken Steps from the old Long Drive The Red burn in 2009 near the site of the Drukken ... Until recently, therefore, the Drukken Steps were thought to have been buried beneath the road surface ... The name 'Drukken' steps name derives from a person's gait as they stepped from stone to stone whilst crossing the burn ...
A Historic Step-stone Bridge
... The name 'Drukken' steps derives from a person's gait as they stepped from stone to stone whilst crossing the Red Burn ... Burns himself used the Scots spelling 'Drucken' rather than 'Drukken' ... The ruins of the Drukken Steps are now found in the Eglinton Country Park ...