Webster’s Revised Unabridged Dictionary · 1913
Tribrach
Tri′brach (trī′brăk), n. [L. tribrachys, Gr. τρίβραχυς consisting of three short syllables; τρι (see Tri-) + βραχύς short.] (Gr. & L. Pros.) A poetic foot of three short syllables, as, mĕlĭŭs.
Webster’s Revised Unabridged Dictionary · 1913
Tri′brach (trī′brăk), n. [L. tribrachys, Gr. τρίβραχυς consisting of three short syllables; τρι (see Tri-) + βραχύς short.] (Gr. & L. Pros.) A poetic foot of three short syllables, as, mĕlĭŭs.