( n. )
One of a succession of niches or platforms, one above another, to hold ore which is thrown successively from platform to platform, and thus raised to a higher level.
( n. )
One of a succession of niches or platforms, one above another, to hold ore which is thrown successively from platform to platform, and thus raised to a higher level.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012