society > occupation and work > equipment > metalworking equipment > [noun] > casting equipment > mould > hole for pouring in metal > shutter for closing (2)
shutter1856
spec.Founding. A gate or movable partition designed to cut off the passage to a mould from the channel in which the molten metal flows.
shuttle1858
A small gate or stop through which metal is allowed to pass from the trough to the mould.