a gate having a widened opening containing a centered disk to prevent molten metal from falling in a direct vertical stream.
The Hidden Histories Of “Humpty Dumpty,” “London Bridge,” And “Ring Around The Rosie”These hidden stories behind these three popular nursery rhymes may not be well known but they certainly make songs like "Humpty Dumpty" a little more interesting.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ring gate
Basal ring square, with two lateral spines, and two triangular gates scarcely one-third as broad as the ring-gate.