stull

noun
\ ˈstəl\
plural -s

Definition of stull

1 : a round timber used to support the sides or back of a mine
2a : one of a series of props wedged between the walls of a stope to hold up a platform for supporting miners, ore, or waste or to protect miners from falling stones
b : a platform held up by stulls

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History and Etymology for stull

perhaps modification of German stollen post, support, from Old High German stollo

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