an ancient hoist or hauling device having three blocks.
Origin of trispast
1700–10; < Latin trispastos having a triple pulley < Greek tríspastos, equivalent to tri- tri- + spas-, stem of spân to draw, pull + -tos verbid suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for trispast
Historical Examples of trispast
This kind of machinery, revolving with three sheaves, is called a trispast.Ten Books on Architecture