[tri.brach] n [L tribrachys, fr. Gk, having three short syllables, fr. tri- + brachys short--more at brief] (1589): a metrical foot of three short syllables of which two belong to the thesis and one to the arsis -- tri.brach.ic adj
TRIBRACH
Meaning of TRIBRACH in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012