Definitions
from The Century Dictionary.
- noun A machine with three pulleys acting in connection with each other, for raising great weights.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Mech.) A machine with three pulleys which act together for raising great weights.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
machine withthree pulleys which act together to raise greatweights .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
From Ancient Greek "drawn threefold".
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Examples
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This kind of machinery, revolving with three sheaves, is called a trispast.
The Ten Books on Architecture Vitruvius Pollio
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