MINER'S INCH
Meaning of MINER'S INCH in English
a unit of measure of water flow, varying with locality but often a flow equaling 1.5 cu. ft. (0.04 m 3 ) per minute.
[ 1865-70, Amer. ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012