/ ˈtrəʊkiː; NAmE ˈtroʊkiː/ noun
( technical ) a unit of sound in poetry consisting of one strong or long syllable followed by one weak or short syllable
► tro·cha·ic / trəʊˈkeɪɪk; NAmE troʊ-/ adjective
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WORD ORIGIN
late 16th cent.: via Latin from Greek trokhaios (pous) running (foot), from trekhein to run.