{ Tri″spast (?), Tri‐spas″ton (?), } n. [NL. trispaston, fr. Gr. � drawn threefold; � (see Tri-) + � to draw.] (Mech.) A machine with three pulleys which act together for raising great weights. Brande & C.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.